inform 11.2011 e (pdf file 2 MB) - Duktus

Volume 7 No. 3 November 2011 

Potsdam • 

WKG pipes: used twice in the construction of the Nesselgrund bridge • 

Linz • 

Culvert pipeline under the river Traun near Linz: a look at how well the Duktus pipes system performs • 

Budapest • 

First trenchless project in Hungary: Duktus pipes successfully celebrate their first day in a new job •

PAGE 2 | INFORM NO. 3 / 2011 

Contents 

3 Editorial 

PROJECTS 

4 WKG pipes for maintaining the temperature of drinking water – Used 

twice in the construction of the Nesselgrund bridge to the south of Potsdam 

5 Culvert pipeline under the river Traun near Linz – A look at how well the 

Duktus pipe system performs 

6 Water, pipes, cannons and lances: snow has to be guaranteed – Duktus 

supplies snow-making projects in Poland, Austria, Switzerland and Russia 

8 Specialists in dealing with extreme situations – Duktus ductile iron pipe 

systems show their superiority for turbine pipelines 

9 Flexibility ensures delivery deadlines are met – Duktus supplies Fraport 

AG with pipes for drinking and non-drinking water / A major project at 

Zac des Bordes – A drinking water supply for the northern hinterland of 

Melun 

10 First trenchless project in Hungary – Duktus pipes successfully celebrate 

their first day in a new job in Budapest 

11 Satisfied customers in Tampere – Part of a drinking water pipeline has 

been replaced by the burst lining technique / An informative event – 80 

participants took an interest in the subject of “The ductile iron pipe – 

laid trenchlessly” 

12 From the pumping station to the river Lippe – A 1,200 metre sewer 

pipeline from Duktus enables flow into a receiving watercourse to be 

regulated / Drinking water supply in the north of the Black Forest – 

More than three kilometres of Duktus ZMU pipes are improving the 

drinking water situation around Bad Teinach-Zavelstein 

13 Rega rescues and piles protect – Swiss Air-Rescue’s base in Locarno 

stands on Duktus piles 

14 Unrivalled safety and reliability– Duktus pipes for fire-extinguishing 

water pipelines 

REPORTS 

15 The machining of fittings starts at Duktus in Hall – A report by Wolfgang 

Brugger, head of Product Development / Duktus extends the term of its 

sponsorship of the Waterfalls SOS Children’s Village 

During the construction of the new Nesselgrund bridge in the federal state of Brandenburg, Duktus 

WKG pipes are being used to carry the drinking water in the bridge pipelines 

16 Hessentag 2012 in Wetzlar – The Duktus pipe depot changes into an 

open-air venue / A special training exercise – Fire brigades, emergency 

aid workers and a special rescue team got training in emergency conditions 

ABOUT US 

17 Day of Action and Ramma Damma day at Duktus – A motivated work 

force, good atmosphere and great results 

18 Welcome to Duktus – Our new member of staff Sebastian Pohl and six 

trainees take their place on the starting line 

700 hours to build an airplane – Johannes Melcher builds model airplanes 

in his spare time 

19 Success on the track – Duktus teams give it their all in two running 

events / And on the golf course!– An invitation from Soval and Duktus 

ImPRINT 

Published by: The executive managements of Duktus Rohrsysteme Wetzlar 

GmbH and Duktus Tiroler Rohrsysteme GmbH 

Editors: Dietmar Fischer, Iris Reinhardt, Elvira Sames-Dickopf 

Contributors to this issue: Florian Althaler, Thomas Aumüller, Alexander 

Bauer, Sieghart Berktold, Annika Beyer, Christian Bieri, Michael Brockers, 

Wolfgang Brugger, Bernard Jeffrault, Michael Klee, Petr Kopal, Walter 

Korenjak, Ingo Krieg, Roland Kröpfl, Marek Kus, Olivier Lecointre, Claudia 

Mair, Johannes Melcher, Andreas Moser, Ulrich Päßler, Sebastian Pohl, Lutz 

Rau, Jürgen Schütten, Patricia Spilka, Stefan Sterr, Uwe Strich, Juha Tiira, 

Werner Volkart, Stefan Weber, Andreas Weiler, Heinz-Jörg Weimer 

Design, typesetting and litho plates: K13 Medien, Wetzlar 

Picture credits/sources: : p. 13, top left: Rega-Fotodienst. Except where 

otherwise indicated, rights in photos, drawings and other representations are 

held by Duktus Rohrsysteme Wetzlar GmbH and Duktus Tiroler Rohrsysteme 

GmbH 

Printed by: Druckhaus Bechstein, Wetzlar 

Editors‘ address: 

inform 

Sophienstraße 52-54, 35576 Wetzlar 

Phone: +49(0) 64 41 49 14 90 

Telefax: +49(0) 64 41 49 14 97 

E-Mail: inform@duktus.com 

© Duktus Rohrsysteme Wetzlar GmbH and Duktus Tiroler Rohrsysteme GmbH 

Next issue: May 2012 

4.5 kilometres of ductile iron pipes supply 25 snow cannons with water in the Polish ski resort of 

Bania-Kotelnica

Editorial 

Dear readers and friends of Duktus, 

Welcome to our Christmas issue of inform for 2011. The Duktus angel on 

the title page formed, quite by chance, from molten iron during a casting 

operation at our works in Wetzlar, may it bring you rest, relaxation and a little 

bit of peace over the forthcoming holidays. 

Our economic environment however has been anything but peaceful over 

the past few months. The debt crisis affecting a number of national economies, 

the bank crisis which has become apparent as a result of this and 

the crisis faced by the Euro have had their effects on the “real economy” of 

Duktus. Problems with financing in many countries and market conditions 

which have become less certain, in the Arab world for example, have made 

themselves felt in our industry. In this way, a series of water management 

projects have been postponed or deferred to a later date because of how 

unclear general conditions are. Some of our competitors have been hit 

very hard by declines in the market. The prices of raw materials have been 

at record levels for months. None of this has made life any easier for Duktus. 

On the contrary, when we finalise the figures for 2011 they will probably 

only be at the same level as last year. We had made up our minds to 

do much better. 

It is thanks to the dedication and flexibility of our employees and their representatives 

that we have been able to face these challenges. Variably organised 

shifts in our factories, tireless efforts put into projects on the markets 

and our employees all pulling together when some extra help was 

needed have enabled us to adapt quickly and effectively to these changing 

conditions. 

At the same time, there were many successes and improvements that we 

were able to achieve in this difficult environment. There were some successful 

and sometimes spectacular operations that we were able to carry out in 

conjunction with our customers. 

The snow pipe systems sector of our market for example has developed 

well. On page 6 and 7 you can read our reports on projects in Poland, Austria 

and Switzerland and in the Russian ski resort of Rosa Khutor, where the 

Winter Olympics are going to be held in 2014. We have also been able to 

chalk up some successes in the field of turbine pipelines. We are happy to 

say that ductile iron pipes have repeatedly come out on top in competition 

with other materials (page 8). 

The unmistakeable advantages of the restrained BLS®/VRS®-T joint regularly 

allow us to be first past the post on trenchless projects. On pages 10 and 

11 you can read about the use of Duktus pipes for the debut of trenchless 

laying in Hungary and about satisfied customers in Tampere in Finland. 

The laying of a culvert pipeline and a number of pipelines crossing waterways 

in Linz (page 5) and a bridge pipeline of WKG pipes near Potsdam 

(page 4) have allowed us to give you a general picture of how well we 

perform. 

Trenchless laying by the relining technique has been carried out for the first time in Hungary’s capital 

Budapest using Duktus pipes 

INFORM NO. 3 / 2011 | PAGE 3 

Behind all these successful projects are our employees who, in good times 

and in bad, by their willingness to play a powerful part in advancing our 

business, have managed to get many things moving. There has been for 

example the project team at Hall who, on Gusskomponenten GmbH closing 

down, rolled up their sleeves and under difficult constraints got the 

machining of fittings started under our own control to enable us to ensure 

that we would be able to supply our customers (page 15). Another example 

is the many colleagues who once again donated their leisure time to 

the Day of Action at Wetzlar and the Ramma Damma day at Hall, in order 

to get to work on many “sites” in the factories (page 17). We introduce you 

to our new “Duktusers” on page 18 and to our teams of sporting enthusiasts 

on page 19. 

We hope you have an enjoyable read and wish you a pleasant holiday and 

a happy New Year in 2012! 

Yours very sincerely, 

Ulrich Päßler Günter Fuhry Stefan Weber Max Kloger 

Duktus pipes of wall-thickness class K 9 were the right choice for the turbine pipeline of the hydroelectric 

power station at Albeins in South Tyrol


WKG pipes for maintaining the temperature 

of drinking water 

USED TWICE IN ThE CONSTRUCTION Of ThE NESSELGRUND BRIDGE TO ThE SOUTh Of POTSDAm 

Connection and pulling-in of the WKG pipes 

During the construction of the new Nesselgrund 

bridge in the federal state of Brandenburg, Duktus 

WKG pipes are being used to carry the 

drinking water in the bridge pipelines. 

Between Michendorf and Potsdam, the capital 

of the state of Brandenburg, federal highway B2 

crosses a multi-track Federal German Railways 

railway line by the Nesselgrund bridge. The 

bridge was about 60 years old, and was no 

longer equal to the present-day volume of traffic, 

or to the higher stresses caused by increased 

vehicle weights, nor were the facilities for carrying 

services state of the art. A new bridge had 

to be built. Brandenburg’s State Highways Authority 

has invested 2.7 million Euros in building 

the bridge and the construction work began in 

February 2011. The access road to Potsdam 

carries a lot of traffic and to keep this road 

open, a two-lane temporary steel bridge 80 metres 

long has been built. This bridge has also 

had to take all the facilities for carrying services. 

Duktus sales manager Lutz Rau explains the 

situation: “In the course of this construction operation, 

an existing DN 300 drinking water pipeline 

needed to be relocated temporarily and will 

need to be re-installed once the new bridge has 

been completed. During the construction 

phase, a tubular steel structure 550 millimetres 

in diameter suspended from the interim bridge 

is holding the pipeline. The planners opted for 

Duktus heat-compensating cast iron pipes 

(WKG) with BLS®/VRS®-T joints and with fully 

galvanized folded spiral-seam outer tubing. This 

enables any possibility of the water pipeline 

freezing to be ruled out even if the water remains 

stationary for a protracted period, as it 

would for example in the event of a possible 

breakdown, or even if there is an extreme frost. 

The flexible positive-locking BLS®/VRS®-T restrained 

joints also compensate safely for different 

temperature-related differences in length 

between the pipeline and the structure of the 

bridge and rule out any threats not only to safe 

operation but also to the German Railways line 

crossing below the bridge.” 

It was not only price and availability that were 

crucial to the placing of the order but also the 

extensive extra technical work that Duktus does. 

Employees of Duktus’s Applications Engineering 

Division at Wetzlar were even involved in the 

initial discussions on construction. All the com- 

The pipes laid were Duktus DN 300 heat-compensating ductile iron pipes (WKG) with BLS®/VRS®-T-restrained joints 

panies involved in the operation took part in 

these discussions, including Energie und Wasser 

Potsdam GmbH (EWP) which is responsible for 

the drinking water supply. Georgios Moutroupidis 

took charge of the on-site instruction of the laying 

personnel belonging to the Berger Bau company, 

and Lutz Rau assisted the team with the fitting 

of the traction head loaned by Duktus by providing 

the appropriate laying tools. As expected, the 

actual connection of the easy to handle BLS®/ 

VRS®-T restrained joints and the pulling-in by 

steel cable of the connected pipes fitted with 

skids for sliding went off without any problems, 

so the 84 metre long bridge pipeline was quickly 

installed. After the pressure test and passing the 

hygiene inspection, the section of pipeline was 

connected to the old pipeline by prefabricated 

angle connections. 

The interim pipeline will be supplying the population 

to the south of Potsdam with their hygienically 

clean water until May 2012. The new Nesselgrund 

bridge will then have been completed and 

a new drinking water pipeline will take over from 

the interim one. Duktus will also be supplying the 

pipes for that. 

Duktus applications engineer Georgios Moutroupidis giving 

instruction on laying 

The two-lane temporary bridge approx. 80 metres long allows 

through traffic to continue during the construction work


Culvert pipeline under the river Traun near Linz 

A LOOK AT hOW WELL ThE DUKTUS PIPE SySTEm PERfORmS 

The 92 metre long culvert pipeline of Duktus ZMU pipes being 

installed in the river Traun 

Being used for special or difficult applications is 

nothing new for Duktus pipes. When a pipeline 

for transporting water was laid from Linz to Ansfelden, 

the ductile iron pipe system once again 

attracted attention because there were many 

challenges which had to be overcome in a relatively 

short distance of (only) 1.4 kilometres. Duktus 

was able to show how well its ductile iron 

pipe system performs. 

This year, there has hardly been any water management 

project in Upper Austria which has 

made such severe demands on the underground 

installation engineers and on the material of the 

pipes as the laying of this pipeline for transporting 

water. Not only did a culvert pipeline 92 metres 

long have to be run under the river Traun, 

but crossings by pipe bridge were also needed 

over the river Krems, the Mühlkanal and the 

Mühlbach and over a canal serving a power station. 

LINZ AG, the city-owned supply company, 

did all the planning and laying work. Duktus DN 

400 pressure pipes with BLS®/VRS®-T joints and 

A concrete casing was needed to stop the pipeline from 

floating up 

a Pur Top coating were used for this work, which 

lasted from 6 February to mid-April 2011. The 

successful commissioning of the water-transporting 

pipeline, which supplies the area served by 

the Wasserverband Großraum Ansfelden utility 

and the southern part of Linz, took place in June 

of this year. 

What made the project necessary was a bridge 

pipeline (700 metres of steel pipes and 700 metres 

of asbestos-cement ones), laid in 1960 when 

the part of the A7 autobahn in Linz was built, 

which had become unserviceable. Renovation 

would have cost 350,000 Euros more, so LINZ 

AG opted for a buried pipeline. The new route 

runs along the A7 towards Ansfelden. The planning 

made allowance for the prospective widening 

of the A7 to three lanes. But that was not all 

the planners had to cope with; there were also 

many stipulations made by the authorities to be 

complied with. In the words of Wilhelm Riedlbauer, 

operations manager of LINZ AG WATER, who 

saw to the planning and implementation of the 

special project: “The major part of the pipeline is 

situated in the Natura 2000 nature reserve. For 

this sensitive area there were special legal stipulations 

relating to nature and fishing which had to 

be allowed for. But there were also water rights to 

be observed, not to mention consents to be obtained 

for ground clearance and stipulations by 

Asfinag, the Austrian motorways operator, and by 

the electricity supplier VERBUND.” 

The major challenge from the laying point of view 

was the 92 metre long crossing of the Traun by a 

culvert pipeline following a curve measuring 80 

metres in radius. The crossing was made without 

using a pre-drained trench. Excavators dug a 

trench two metres deep in the river, and the pipeline, 

which was encased in concrete, was pulled 

in by a cable winch able to exert a tractive load of 

80 tonnes. As Duktus sales manager Ingo Krieg 

is well aware, the concrete casing was insisted 

on by the authorities to stop the 76 tonne weight 

of the pipeline from floating up, given the high 

speed of flow of the Traun. Because the Duktus 

ZMU pipes were mounted on a sledge of steel 

plate, the tractive forces acted on the sledge and 

not on the culvert pipeline. At the time of installation, 

an ascending end section was pulled in as 

well to stop any river water from getting into the 

pipeline. Two drivers kept watch on the pulling-in. 

When the other, smaller, waterways were crossed, 

a heavy crane lifted the Duktus pipes, which had 

been pre-connected in a steel supporting cradle, 

into the water. For these sections of the pipeline, 

special GDR fittings (plain-ended pipes) – supplied 

by Duktus in Hall as specials – were used. 

Pressure tests were carried out before and after 

the pulling-in and lifting-in work done in the respective 

cases. 

“Here on the Traun we were able to watch a demanding 

piece of laying which went off without 

any problems, due not least to the professionalism 

of the companies involved – GLS Bau und 

Montage GmbH of Perg, Hitthaller of Linz and 

LINZ AG itself – but also to the reliability of the 

BLS®/VRS®-T joint and to the ruggedness of the 

ZMU pipes”, is how Ingo Krieg sums things up. 

Working under floodlights 

When the smaller waterways were crossed, the sections of pipeline – fitted into a cradle of steel plates – were lowered into place by 

heavy cranes


Water, pipes, cannons and lances: snow has 

to be guaranteed 

DUKTUS SUPPLIES SNOW-mAKING PROJECTS IN POLAND, AUSTRIA, SWITzERLAND AND RUSSIA 

Duktus pipes feed 25 new snow cannons in 

the Polish ski resort of Bania-Kotelnica 

Over the past few years Poland’s skiing regions 

have caught up enormously in the field of snowmaking 

and like their neighbouring resorts in 

Eastern Europe are now well set up. These regions 

cover not only Zakopane, the skiing capital 

in the High Tatras, but above all Bialka 

Tatrzanska, which is only 20 kilometres away 

and, with its three ski resorts of Kotelnica, Kaniowka 

and Bania, is getting a name for itself as a 

fashionable destination, and in Poland has become 

a favourite meeting point for skiing and 

snowboard enthusiasts. The lift capacity is 

enough for 18,000 people an hour. Ski runs with 

In the Polish ski resort of Bania-Kotelnica, 4.5 kilometres of ductile 

iron pipes are supplying 25 snow cannons with water 

artificial snow have been standard for a long 

time now. As well as the latest project in Bialka 

Tatrzanska, Marek Kus, a member of staff of 

Duktus’s Polish sales and distribution partner 

TALIS Polska, was involved in previous work 

with the pipe preparations for the making of 

reliable snow. “In the past, TALIS Polska has 

managed to place around eight kilometres of 

Duktus snow pipes here, so we have plenty of 

good experience with the ductile iron pipe system 

to call on.” 

For the 2011/2012 season, the Tatra region has 

excelled itself. A year after the 10th anniversary, 

the operators have again made a massive investment 

not only in developing the infrastructure 

but also in snow-making, to enable them to 

offer the increasing numbers of visitors a reliable 

winter experience. To enable a further area 

of around 700 square metres to be supplied 

with artificial snow in the Bania-Kotelnica ski 

resort, 4.5 kilometres of ductile iron pipes of 

nominal sizes from DN 80 to DN 300 are needed. 

The work of laying the snow pipelines, 

which are fed from two pumping stations and 

the connection of the pipelines to the snow cannons 

has now been completed. The Polish firm 

SN Supersnow, which has been manufacturing 

snow cannons and selling them all over the 

world for 20 years, was responsible as its general 

contractor for the snow-making project in Bialka 

Tatrzanska. It was very satisfied with the 

reliable Duktus pipe system and with the support 

that was provided on the applications engineering 

side of things. In time for the start of the 

season, 25 snow-makers fitted with an automatic 

monitoring system will be taking up their duties 

along the new downhill runs. They will be 

fed by pipelines which are designed for an operating 

pressure of 40 bars. 

The preliminary work and the laying of the snow pipes, of nominal sizes of DN 80 and DN 300, went off without a hitch. The pipelines 

are designed for an operating pressure of 40 bars 

Goldeck, the Sports mountain, has added 

5.9 kilometres of snow pipes 

Only the best snow conditions will make winter 

sports a really satisfying experience. That was 

also the view of the people responsible at the 

Goldeck ski resort, which may be small but is 

now standing tall. To put its star feature, the longest 

black (expert) rated downhill ski run in the 

Alps (8.5 kilometres from an altitude of more than 

2,100 metres to 550 metres), back centre-stage 

and to make the whole arena more attractive and 

to be more certain of providing good snow, they 

got together a sum of 30 million Euros. The 

Sports Mountain, as people like to call the 2,142 

metre high Goldeck, is a magnet for tourists near 

Spittal in the Lake Millstatt holiday region in Carinthia. 

For half a century, ski sports enthusiasts have 

been visiting there from near and far. However, 

the facilities were beginning to show their age. 

That was why a relaunch was necessary. After 

extensive preparatory operations and the successful 

completion of an environmental impact 

assessment procedure the time had come – this 

important project to re-invigorate tourism on Spittal’s 

sunny mountain could get underway and is 

due to be completed this year. The development 

work is proceeding at full speed on many construction 

sites. As well as the construction of the 

new six-seat chair lift and the Goldeck cabin lift, 

what will also help the ski resort to be successful 

is the development of the ski runs and the expansion 

of the snow-making systems. While the excavators 

and transporter helicopters are still hard at 

work and the dozens of teams of construction 

workers are pressing ahead with the ambitious 

project, the marketing experts have been busy 

drawing attention to the wide-ranging reliability of 

snow in their advertising. The vital thing now is to 

The Goldeck ski resort in Carinthia is going to be certain of snow: 

Duktus snow pipes are helping it to do so

get the work finished on time. Laying 5.9 kilometres 

of snow pipelines under pressure from a tight 

deadline and in sometimes extremely steep and 

inhospitable terrain is a major challenge for the 

laying teams. Duktus’s cast iron pipe system is in 

its element on the Goldeck because it has been 

able to give impressive proof of how a reliable it is 

in every respect when “under pressure”. “The 

snow pipelines are all designed for operating 

pressures of 100 bars and thanks to the BLS®/ 

VRS®-T joints they have been easy to install, 

which has been a stroke of luck for the laying 

company on this project. Good progress has 

been made with the installation work and everyone 

is confident of being able to hand over the 

system on time”, says Duktus sales manager Walter 

Korenjak, adding: “We are happy about this 

project in Carinthia because it is boosting the 

winter sports resort and is also benefitting the 

domestic labour market.” 

Having now taken its first step towards expanding 

to full snow-making, Goldeck is one of the more 

than 1000 ski resorts all over the world which use 

Duktus cast iron pipes. 

Long-term safety and reliability guaranteed 

Over the past three years, the Obersaxen Mundaun 

Val Lumnezia ski resort in the canton of Graubünden 

has laid more than 20 kilometres of snow pipelines 

using Duktus pipes. This skiing paradise, whose 

highest point is the Piz Sezner at 2,310 metres 

above sea level, provides its international clientele 

with 120 kilometres of pistes and 18 ski lifts. Because 

of the climatic conditions, this, the second 

largest winter sports centre in the Surselva district 

(the Bündner Oberland in German), is divided into 

two parts, so to speak. On the north-facing slopes, 

good snow continues to lay for a long time whereas 

in the southerly part – Val Lumnezia with its 

Obersaxen Mundaun: 20 kilometres of pipeline perfectly laid – 

using ductile iron pipes and the BLS®/VRS®-T restrained joint 

from Duktus 

main village of Vella – this is not the case, due to 

the effect of the sunlight. Snow-making systems 

strike a balance between these two extremes. With 

its latest investment of some ten million Swiss 

francs, the operator Bergbahnen Obersaxen-Mundaun 

AG has made sure that snow can be made 

on the whole of the interconnected ski area from 

Meierhof to Vella, which has four chair lifts and 

around 25 kilometres of pistes. When the contracts 

were being placed for the snow pipelines, Duktus 

was chosen as the pipe supplier for a large proportion 

of the distance involved. In the words of 

Hansjörg Aggeler, a member of the technical staff 

of Duktus’s Swiss partner Hagenbucher: “We were 

able to come out on top because the Duktus ductile 

iron pipe system, with BLS®/VRS®-T joints, is 

capable of guaranteeing sustainable safety and 

reliability in the difficult conditions posed by the 

terrain, which is not only rocky but also boggy and 

unstable over large areas, and it can also be laid 

without any problems.” Proof of this was provided 

between the autumn of 2009 and the late summer 

of 2011 by the laying of more than 3.000 cast iron 

pipes of nominal sizes from DN 80 to DN 200 and 

of wall-thickness classes K 9 and K 11. “These 

classes are the client’s guarantee of the long term 

safety and reliability of the snow pipelines, which 

as from the start of the season in December 2011 

will be supplying water to a lance system made by 

the Bächler Company”, said Stefan Sterr, head of 

Special Products at Duktus in Hall. 

Duktus continues its Olympic success story 

in Sochi 

The preparations being made in Sochi for the 

2014 Winter Olympics are still progressing at a 

rate of knots. The work of installing the snow cannons 

has now begun at the Freestyle Skiing Centre 

and the Snowboard Park. 

For the snow-making systems on the Olympic ski 

runs, Duktus pipes with BLS®/VRS®-T joints had 

already won over the people responsible last year. 

14 kilometres of snow pipes were laid at the ski 

resort of Rosa Khutor (inform reported on this in 

the 2/2010 issue). “This successful debut has now 

netted us a fresh order”, Andreas Weiler, head of 

International Sales at Duktus in Hall, is happy to 

tell us as he explains the consequences of this 


good reference: “In September 2008, the IOC 

decided to move the Freestyle Centre from the 

“Grand Hotel Polyana” ski resort to Rosa Khutor 

in order to combine it with the Snowboard Park 

and therefore provide better conditions for competitors 

and the public. 8000 spectators respectively 

will be able to watch the Olympic competitions 

at the Snowboard Park and the Freestyle 

Centre. These facilities are at an altitude ranging 

from 1,100 to 1,200 metres. They are being fitted 

out to state-of-the-art standards and with the most 

up-to-date equipment, particularly for reliable 

snow. The investors have once again been happy 

to rely on the proven ductile iron pipe system from 

Duktus. This was confirmation to us that doing 

good work pays off. Sochi is a prestige project 

which again establishes Duktus as the world market 

leader in reliable snow pipelines of ductile cast 

iron.” More than 100 snow generators will be 

used to produce the snow in the two arenas. 16 

kilometres of ductile iron pipes (DN 80 to DN 500) 

are being laid for the pipelines to the cannons. 

The coordination of the infeed of the water and 

the production by the snow generators has to 

work perfectly to allow a blanket of snow of the 

required thickness to be produced on the ski runs 

at any time it is wanted. “As far as reliability is concerned, 

Duktus snow pipes do everything that is 

needed. The maximum operating pressure is 100 

bars so that puts us on the safe side”, said Weiler. 

The work will be completed by late 2011 and the 

first tests at the Snowboard Park and the Freestyle 

Centre will be taking place in February 2012. 

Including these facilities, Duktus’s total of 30 kilometres 

of cast iron pipes has made a notable 

contribution to the reliability of snow at the Olympics 

in the Northern Caucasus Mountains. 

The Snowboard Park and Freestyle Skiing Centre at Rosa Khutor; 

16 kilometres of Duktus pipes are making sure of a safe and 

secure pipeline feeding water to the snow cannons 

The skiing events of the Winter Olympics will be taking place in 2014 at Rosa Khutor high above Sochi. This is already the second time 

that Duktus has supplied its proven snow pipe system to the Caucasus Mountains


Specialists in dealing with extreme situations 

DUKTUS DUCTILE IRON PIPE SySTEmS ShOW ThEIR SUPERIORITy fOR TURBINE PIPELINES 

Due to the terrain, the turbine and sprinkler 

irrigation pipelines follow the same narrow 

route 

For a long time now, Konsortialgesellschaft Albeins 

has been operating a hydroelectric power 

station to supply electricity to the municipality of 

Albeins. Albeins is a village about four kilometres 

to the south of Brixen in South Tyrol. 

A 25 year old steel turbine pipeline had become 

unserviceable and was therefore replaced by a 

pipeline of ductile iron pipes in September 2011. 

In the course of replacing this, a pipeline for sprinkler 

irrigation, also using Duktus pipes, was laid 

along the same route. In spring and summer, it 

supplies water to Albein’s extensive orchards. 

Andreas Moser, product manager for turbine 

pipelines at Duktus in Hall, explains the conditions 

that the planners and the laying company 

had to cope with: “Because the nature of the terrain 

only allowed a very narrow route to be followed, 

we faced the challenge of planning and 

laying both the pipelines to a technically satisfactory 

standard in cramped conditions. Even at the 

planning stage it was clear from the many curves 

in the line, the rocky ground and the period of 

only four weeks laid down by the client that only 

an easily and quickly laid pipe system, and also 

one that would stand up to stress, could be considered.” 

To make the pipelines safe, more than 

40 socket bends were needed in each of the 

More than 40 socket bends were needed to lay the turbine and 

sprinkler irrigation pipelines in Albeins 

In steep terrain the two pipelines had to be laid in only four weeks 

– a clear opportunity for Duktus pipes 

more than 880 metre long runs of pipe. With this 

number of bends, it would have been pure fantasy 

to expect the pipelines to be laid in welded 

steel pipes in the short time required. Not with the 

Duktus ductile iron pipe system however, which 

once again was able to show its superiority here 

in Albeins. Both the pipelines, for which the static 

operating pressure is 14 bars, were laid in Duktus 

pipes of wall-thickness class K 9. A black polyurethane 

external coating was selected for the 

DN 500 turbine pipeline and a blue one for the 

DN 300 sprinkler irrigation pipeline. The pipelines 

are fed from two storage basins and are now fully 

operational. 

Duktus’s good installation references won 

the client over 

Duktus having had a convincing success in producing 

the turbine pipeline for the Monno hydroelectric 

power station (inform reported on this in 

the 2/2011 issue), the doors were open for it in 

Lombardy. 

As an investor and operator, SIT Service was 

planning two small hydroelectric power stations in 

Ponte di Legno in the Valle Camonica, a village 

well known for its “Adamello Ski” ski resort. The 

turbine pipelines for these were originally to be 

laid in steel. But things turned out differently – 

successful presentations and the way in which 

things had been handled in Monno won the operating 

company over to the technically and economically 

very much better solution of using Duktus 

pipe systems. The construction of the two hydroelectric 

power stations, “Ponte 1” and “Ponte 

2”, begin in September 2011. 

“We are proud of this project in Lombardy”, says 

Moser, “because we were able to get the Duktus 

products accepted in the face of strong competition.“ 

1,500 metres of DN 900 ductile iron pipes 

will be doing their duty reliably for Ponte 1. For 

the 600 metre long section of the pipeline situat- 

ed in marshy ground in the region of the water 

intake structure, pipes with BLS® joints had to be 

used to safeguard the bends. The situation was 

similar at Ponte 2. Here too, 600 metres of the DN 

700 turbine pipeline’s overall length of 1,700 metres 

was installed with BLS® joints because the 

route is situated in steep terrain and there are a 

lot of changes in direction along it. “The advantage 

we have is that Duktus provides a safe, secure 

and appropriate solution to any conditions 

the terrain may pose”, says Moser. 

A future in Chile 

On 20 and 21 June 2011, the Expo APEMEC 

international trade fair and users’ forum took 

place in the Chilean capital Santiago. Together 

with its Spanish sales and distribution partner 

Construtec, Duktus was represented for 

the first time at this, the largest mini hydro fair 

in Latin American, to present itself to this potential 

new market. Today, Chile alone has 

10,000 megawatts of potential generating 

capacity for small hydroelectric projects. At 

the moment, only 2% of this potential is being 

developed for energy projects. The Chilean 

government has set itself the goal of having 

20% of the energy required generated 

from renewable energy sources by 2020. 

Because there are no government subsidies 

for energy generation, small hydroelectric 

projects are becoming increasingly attractive. 

The market therefore holds the promise of 

large potential sales for turbine pipelines. 

“Our appearance at the fair has smoothed 

the way for gaining a position for Duktus pipe 

systems and we are confident of shortly being 

one of the players in this Andean country”, 

is how Construtec’s CEO, Francisco 

Dominguez Siemens, sums up the position. 

Duktus pipes came out on top in competition with steel. In Ponte di Legno in Lombardy, two turbine pipelines are being laid for the Ponte 

1 and Ponte 2 hydroelectric power stations


flexibility ensures delivery deadlines are met 

DUKTUS SUPPLIES fRAPORT AG WITh PIPES fOR DRINKING AND NON-DRINKING WATER 

Construction work is always going on at Frankfurt 

Airport: as one development is completed, another 

is ready to start. Duktus is currently supplying 

a number of sites at Germany’s largest airport. 

For the infrastructural development work needed 

to expand the operations area in the south-west of 

the airport, some 1,680 metres of pipes of DN 

300 nominal size for non-drinking water have 

been laid by Max Bögl of Neumarkt in the Upper 

Palatine, the company which had been awarded 

the contract. Another 185 metres of DN 150 cast 

iron pipes are intended as supply pipelines for 

the hydrants. For the pipes for non-drinking water, 

the external protection consists of a zinc coating 

and a finishing layer which is green in colour. The 

client uses this green external paint finish as an 

identifying sign. For the drinking water pipelines 

in this area, 1,050 metres of Duktus pipes of the 

A major project at zac des Bordes 

A DRINKING WATER SUPPLy fOR ThE NORThERN hINTERLAND Of mELUN 

The town of Melun in the Seine-et-Marne department 

lies 50 kilometres to the south-east of Paris. 

Its northern hinterland is markedly agricultural 

and does not have adequate connections to the 

pipelines supplying the communes. There is going 

to be a fundamental change to this thanks to 

the laying of more than 8,000 metres of ductile 

iron pipes. Duktus’s French sales and distribution 

partner, Soval, managed to get the decision on 

the supply of Zinc-Plus coated cast iron pipes of 

different nominal sizes made in its favour. Olivier 

Lecointre, Sales Manager at Soval, oversaw the 

project and in the course of many negotiations 

and advisory discussions was able to convince 

the supply association SIAEP (Syndicat Intercom- 

same quality but of DN 200 size and coloured 

blue on the outside are being installed. Only two 

months has been allowed for the laying of the 

entire pipeline network. To meet the short delivery 

deadlines, and to enable the different installation 

sites to be supplied on time, flexibility was needed. 

The Production department at Wetzlar was 

therefore changed over at short notice for the 

production of the special green colour pipes. 

“Under Fraport guidelines, Duktus is only supplying 

pipes of wall-thickness class 9 designed for 

an operating pressure of 16 bars. Thinner wall 

thicknesses cannot be used at the airport because 

of the durability required. Due to high traffic 

loads, the stress analyses require the entire 

zone occupied by the pipelines to be produced 

from sandy material”, Duktus Sales Manager 

Heinz-Jörg Weimer tells us. 

munal Approvisionnement Eau Potable) of the 

quality and suitability of ductile iron pipes and of 

the sort of performance they could expect from 

Duktus. 

“This intercommunal association is responsible 

for the supply of drinking water in the region and 

needs to connect the villages of Voisenon, 

Montereau-sur-le-Yard and Saint-Germain-Laxis 

to Melun’s pipeline network. The pipes were required 

to be of pressure class C 50, which guarantees 

high safety margins. Duktus was able to 

meet this requirement with pipes of the desired 

nominal sizes of DN 500, 400, 200 and 150. The 

costs of the logistics and the work required to 

handle the laying between the small and scat- 

The major Zac des Bordes project will ensure a supply of drinking water for many communities to the north of Melun. A total of more than 

8,000 metres of ductile iron pipes of different nominal sizes are being laid 

Duktus’ supply for the expansion of the operations area in the 

south-west of Frankfurt Airport includes 1,680 metres of pipes for 

non-drinking water with a green external paint finish 

tered settlements were considerable. The installation 

work began early in July 2011 and is due to 

be completed by the end of the year. Although 

the deadlines set are short, it is very important for 

them to be met. The association opted for the 

higher wall-thickness in order to obtain not only 

safety, which ductile iron pipes offer anyway, but 

also a guarantee of a long life for the pipes.” 

The cast iron pipes are being laid in open trenches 

for the entire length of the runs. The region’s 

major construction site is now in full swing and 

kilometres of the blue Duktus pipes can be seen 

running over the fields and meadows of the flat 

hinterland of Melun. 

Duktus pipes of class C 50 with a Zinc-Plus coating are being 

used for the entire operation


first trenchless project in hungary 

DUKTUS PIPES SUCCESSfULLy CELEBRATE ThEIR fIRST DAy IN A NEW JOB IN BUDAPEST 

The project attracted plenty of attention and was visited by many 

potential customers 

The trenchless laying technique and its star players, 

the Duktus pipes that are ideally suited to 

this technique, are becoming increasingly important 

outside the central European area. In a relining 

project in Budapest, ductile iron pipes have 

been used for trenchless laying for the first time 

in Hungary and have shown what outstanding 

properties they have. 

Hungary‘s capital has a population of around 

two million and is a perfect example of a place 

where the use of no-dig techniques are beneficial 

in areas where traffic is sensitive to disruptions. 

With chain hoists, it is very easy to install even DN 600 pipes in a very cramped space 

Because of the high volume of traffic in this city 

on the Danube, there are frequent traffic jams. 

More than 600,000 cars use the road network, 

whose characteristic features are ring roads and 

radial roads. 

Between wide traffic arteries there are a large 

number of narrow roads which are often only 

one-way. The majority of Hungary’s major roads 

run through Budapest, so there is not only the 

town’s own traffic to be dealt with but also the 

through traffic. Because of these factors, pipeline 

renovation operations carried out in open trenches 

put a severe strain on the traffic situation. 

Back in the summer of 2010, Pureco GmbH, 

Duktus’s representative in Hungary, gave a presentation 

to tell professionals about the suitability 

of ductile iron pipes for trenchless laying techniques, 

which are both environmentally and economically 

superior (inform reported on this in the 

2/2010 issue). 

“With our informative presentation we were pushing 

at an open door”, remembers Pureco sales 

manager István Öllös, “the situation is very sensitive 

due to the volume of traffic and the large 

number of historic buildings in Budapest, therefore, 

trenchless laying is the method of choice 

here to replace pipelines quickly, easily and cost 

efficiently.” 

The pipeline network operated by Budapest Waterworks, 

a water supply company founded in 

1886, is now showing its age and needs to be 

renovated in many places. In the spring of 2011, 

an old steel pipeline needed to be replaced on 

one of the most heavily used roads. “Laying in 

the conventional way would have caused the 

traffic to collapse completely”, says Duktus sales 

manager Roland Kröpfl. “That was why – on the 

basis of the last year’s presentation – we were 

able to win over the decision makers to the relining 

technique using Duktus pipes.” 

The pipes used were ZMU pipes of DN 600 

nominal size with BLS® joints. Two small installation 

pits each measuring 8 x 2 metres were 

needed for the laying 

of the 200 metre 

long run, which was 

done by the Hungarian 

installing 

company Hajdú és 

Társai Kft. Duktus 

supplied the traction head on loan. The traction 

machine was bought by Budapest Waterworks 

and made available to the installing company. A 

very positive view was taken of the easy way in 

which the BLS® joint could be handled and of 

the ruggedness of the ZMU coating. 

“Sales service at Duktus doesn’t come to an end 

simply when the project is completed. The right 

basic training for the installing workers and the 

ongoing support given on site are our plus points 

for the future”, says István Öllös 

This first Hungarian relining project, using Duktus 

pipes, was visited by large numbers of potential 

customers while it was being carried out. Roland 

Kröpfl sums things up: “The project was a clear 

success for Budapest Waterworks and for Duktus. 

A further piece of pipeline renovation is in 

prospect next year using the same technique.” 

Trenchless laying by the relining technique has been carried out for the first time in Hungary’s capital Budapest using Duktus pipes 

Fitting the Duktus traction head into the steel pipeline

Satisfied customers in Tampere 

PART Of A DRINKING WATER PIPELINE hAS BEEN REPLACED By ThE BURST LINING TEChNIqUE 

A burst lining site in Tampere in Finland: pulling-in of the string of 

bursting rods in the launch pit 

Because of the good preparatory work done by 

Oy Lining, Duktus’s Finnish sales and distribution 

partner, the water supply company of Tampere 

decided to replace part of a DN 250 drinking 

water pipeline by the burst lining technique. Tampere 

in the south-west of Finland is home to the 

biggest inland-waterways port in the North and 

next to Helsinki is the country’s most important 

transport hub. 

“The decision was made to use the burst lining 

technique in order to keep the interference with 

traffic to a minimum when the 624 metre long 

section of the pipeline was replaced. Preliminary 

investigations had shown that the soil around the 

old pipe could be displaced. This is an important 

prerequisite for successful laying along the same 

route, on which the old pipe is forced out radially 

after the bursting process”, explains Juha Tiira, 

sales manager of Oy Lining. The installation work 

began in September 2011 with the setting up of 

The DN 250 pipes being connected before they are pulled in 

the installation pits, which were each arranged, at 

a spacing of about 90 metres, so that they were 

also able to be used at the same time for the laying 

of the house connections. 

“For the trenchless installation site in Tampere, we 

opted for Duktus pipes with BLS®/VRS®-T joints 

and a cement mortar coating and for K 9 as a 

wall-thickness class, this is the right grade of pipe 

for the burst lining technique, which calls for the 

material of the pipe to have large safety margins”, 

stresses Tiira. 

Annika Beyer of International Sales at Duktus in 

An informative event 

80 PARTICIPANTS TOOK AN INTEREST IN ThE SUBJECT Of 

“ThE DUCTILE IRON PIPE – LAID TRENChLESSLy” 


Wetzlar is sure that further trenchless projects are 

going to be implemented with Duktus pipes in 

Tampere in the near future: “At this year’s WAS- 

SER BERLIN, we had an opportunity to talk with 

the customers that Oy Lining had brought to us, 

about no-dig operations which have successfully 

been completed in the past using ductile iron 

pipes. They assured us that when used in combination 

with trenchless laying techniques they 

found the quality of our products very convincing. 

This year alone, Duktus pipes were used on three 

operations in Finland.” 

In late September this year, Duktus sent out invitations to a two-day informative event on the subject 

of “The ductile iron pipe – laid trenchlessly”. The aim was to give the customers who had travelled 

in from all over Germany a picture of the trenchless installation techniques where ductile iron 

pipes are used. With the kind assistance of the Tracto-Technik company, one of the leading manufacturers 

in the field of trenchless pipe-laying technology, the guests were given an insight into the 

theory and practice of the individual techniques. After the two sales managers for Germany, Tracto-Technik‘s 

Kai Bernhard and Duktus‘s Silke Hackl, had welcomed the guests, Sebastian 

Schwarzer of Tracto-Technik and Steffen Ertelt, head of the Applications Engineering Division at 

Duktus in Wetzlar, gave talks on the individual installation techniques and on the machinery required 

for the horizontal directional drilling, burst lining, relining and rocket plough techniques. The 

new revised version of the Duktus Manual on the trenchless installation of ductile iron pipes was 

also presented as part of the event. At the practical demonstrations on Tracto-Technik’s testing 

grounds in Lennestadt (North Rhine-Westphalia), the 80 participants were able to see how a steel 

pipe was cut open by the roller-carried knife and how the ductile iron pipe was pulled in by the 

Grundoburst 400G type burst lining system. Equally impressive was the demonstration of the horizontal 

direction drilling technique using a horizontal directional drilling system of the Grundodrill 

type. ZMU pipes with BLS®/VRS®-T joints were used in both these cases. On the agenda on the 

second day was an inspection of the department producing cast iron pipes at Wetzlar. The guests 

followed the entire process by which ductile iron pipes are manufactured from the foundry. 

Among the things the participants were able to watch on Tracto-Technik’s testing grounds in Lennestadt were how a steel pipe was cut 

open and how the ductile iron pipe was pulled in by means of the burst lining system


from the pumping station to the river Lippe 

A 1,200 mETRE SEWER PIPELINE fROm DUKTUS ENABLES fLOW INTO A RECEIvING WATERCOURSE 

TO BE REGULATED 

As a result of the effects of mining-related subsidence, 

the Gecksbach stream near Lippramsdorf 

– a village close to the town of Haltern am See in 

North Rhine-Westphalia – could no longer find its 

way unaided into the river Lippe. The lower 

course of the stream has therefore had to be 

moved. In future, the stream will flow to a new 

pumping station and from there will be pumped 

into the receiving watercourse via a 1,200 metre 

long pressure pipeline. The client is the Lippeverband, 

the body managing the central and lower 

Lippe. The operation is costing millions of Euros 

and the construction work for it began in autumn 

2010. Duktus DN 600 sewer pipes with BLS® 

joints were used for the installation of the pressure 

pipeline. In its planning work, the Lippeverband 

had to allow for the subsidence which can 

still be expected, because coal-mining is still going 

on in the region. In view of these ground conditions, 

the safety margins offered by the pipes 

had to meet very stringent requirements, as the 

pipeline will have to withstand the imponderables 

due to the unstable ground. As Duktus Sales 

Manager Jürgen Schütten explains, “This was 

also the reason why the Lippeverband opted for 

wall-thickness class K 9, to make sure that it 

would be on the safe side in the long term. The 

trench for the pipeline was constructed with watertight 

sheet-pile shoring. The operation was a 

challenging one and made special demands on 

Duktus’s Application Engineering Division. As 

The ductile iron pipes being connected into the manhole 

structure 

The DN 600 cast iron pipeline passing through the manhole 

structure 

well as the instruction of the site personnel, there 

were also complicated details which had to be 

settled. To meet the requirements imposed by the 

mining subsidence conditions, travels under traction 

and thrust had to be checked and suitably 

tailored so that the amounts of movement required 

could be made available by means of the 

existing tolerances at the sockets and some additional 

collars which would be needed. Once 

again, Duktus showed its expertise as an adviser 

and partner for the planners and the companies 

doing the installation work when demanding underground 

installation projects are being carried 

out.” The Haltern-Lippramsdorf pumping station 

went into operation early in April 2011. The job of 

laying the pressure pipeline, which was completed 

in June, was handled by Böwingloh & Helfbernd 

GmbH of Verl. 

Drinking water supply in the 

north of the Black forest 

mORE ThAN ThREE KILOmETRES Of DUKTUS zmU PIPES ARE ImPROvING 

ThE DRINKING WATER SITUATION AROUND BAD TEINACh-zAvELSTEIN 

To improve the drinking water supply to Bad Teinach-Zavelstein 

and other surrounding municipalities, 

local water utilities have decided to enter into 

a co-operative agreement with the large neighbouring 

utility Zweckverband Schwarzwald-Wasserversorgung 

and to expand the pipeline networks 

in three sections of installation work. More 

than three kilometres of 

150 nominal size Duktus 

ZMU pipes with BLS®/ 

VRS®-T joints are being 

laid for this. The ductile 

iron pipe is an accepted 

standard at the Zweckverband. 

For years, this drinking water supplier, 

which sends out around 2.2 million cubic metres 

of excellent water from the region every year, has 

been putting its trust in the durability and strength 

of the ductile material. The majority of the pipelines 

are being laid using the open trench tech- 

nique. “The cement mortar coating of the pipes 

saves money for clients because the soil dug out 

can all be backfilled and no additional bedding is 

needed for the pipes. As well as the immaculate 

corrosion protection that the ZMU coating provides, 

this was the reason why it was decided to 

lay all the sections in this grade of pipe”, Duktus 

Sales Manager Alexander Bauer tells us. In September 

2011, some 200 metres of the future connecting 

pipeline to the Zavelstein high-level service 

reservoir was laid by the directional drilling technique. 

The consulting engineers, Alwin Eppler of 

Dornstetten, had opted for this variant laying technique 

because there was an old asbestos cement 

pipeline in the region concerned which needed to 

be replaced. “By laying by the directional drilling 

technique we were able to do the work at low cost 

and avoid any harmful effects on the environment”, 

says Willi Ruderisch, CEO of Flammer of 

Mössingen which did the installation work. 

A 200 metre long section of the future connecting pipeline to the Zavelstein high-level service reservoir was laid by the directional drilling 

technique. An old asbestos cement pipeline was replaced at this point

Rega rescues and piles protect 

SWISS AIR-RESCUE’S BASE IN LOCARNO STANDS ON DUKTUS PILES 

The Rega base in Ticino has existed since 1980 and covers a challenging region. The crew flies more than 600 missions a year 

When, on 1 June 2011, the foundation stone was 

laid for the new building which is to be home to 

Swiss Air-Rescue (Rega)‘s base in Locarno in the 

canton of Ticino, it was clear that Duktus ductile 

iron piles would ensure the load-bearing capacity 

of the foundations. The flood-proof new base will 

be going into operation in 2012. It lies in the centre 

of the Magadino plain, which was built up by 

sediment which the river Ticino deposited here. 

Previously the river had spread right across the 

valley in countless meanders but following a river 

realignment towards the end of the 19th century it 

was moved into a canal running in a straight line. 

Embankments on the banks on both sides to 

guard against high water levels are intended to 

prevent any flooding from occurring. The marshland 

which was allowed to drain and dry, is today 

heavily farmed, but the soil due to the deposits 

(clay, silt and sand) are too soft and prone to settlement, 

it cannot safely be used as a foundation 

soil without using pile foundations. Like its other 

bases in Switzerland, the new base built for Rega 

in Locarno is modular in construction. 145 preformed 

ductile iron driven piles of a diameter of 

270 millimetres are making sure that its foundations 

are safe. 

Clear advantages in terms of cost 

“Duktus was able to come out on top over the 

basic tender, which envisaged the use of concrete 

driven piles”, explains Thomas Aumüller, 

head of Pile Systems at Duktus in Hall. “The great 

advantage our ductile piles have is that they can 

be driven with a light and compact piece of 

equipment and need a space measuring only 

eight metres in height. Approach Control at the 

base in Locarno had some special safety requirements 

which had to be met. In this way, the mast 

of the driving equipment had to be lowered overnight 

and taken away entirely at the weekend. 


145 grouted ductile iron piles give strength and stability to the 

foundations 

There is not much cost or complication to the 

setting up of the driving equipment so this was 

not a problem.” As well as these advantages, the 

Duktus piles also scored points with a further reduction 

in costs in comparison with concrete driven 

piles, which would have been much the more 

expensive option due to the incidental work such 

as the cutting away or machining away of the pile 

head and to the spoil generated. The light-weight 

driving equipment meant that the working platform 

was cheaper to produce and the pile lengths 

went down by about 10% from 7 to 6.2 metres. 

The special underground construction company 

SIF-Groutbor needed only five working days for 

the driving of the 145 ductile iron piles. In the 

dynamic load tests, the load bearing capacity 

was found to be from 480 to 550 kN, for a design 

load in pressure of 270 kN, meaning that in spite 

of the reduction in the length of the piles there 

was found to be a safety factor of 1.8 to 2. 

The work to build the new Rega base on the Magadino plain in the canton of Ticino began in June 2011. Duktus ductile iron piles came out on top in competition with concrete driven piles


Unrivalled safety and reliability 

DUKTUS PIPES fOR fIRE-ExTINGUIShING WATER PIPELINES 

The “Sonnhalde” area in Switzerland’s Emmental 

region is well equipped to deal with 

fires 

To enable adequate quantities of fire-extinguishing 

water to be supplied in the event of a fire, the 

municipalities of Rüderswil and Lützelflüh in the 

canton of Berne have connected the Sonnhalde 

residential area to the public water supply. Sonnhalde 

was previously supplied by the Sonnhalde 

private water supply association, but this was 

unable to provide enough water for fire-extinguishing 

purposes. Plans for the project were 

worked out by the consulting engineers H.R. 

Müller AG of Bremgarten in the canton of Berne. 

The laying work had to be done in winter, when 

vegetation was sparse, and in the severe cold. An 

added difficulty was that the soil conditions varied. 

Duktus’ sales and distribution partner 

HAGENBUCHER was able to offer the right 

grade of pipe for these difficult conditions. Ductile 

iron pipes with a ZMU external coating and BLS®/ 

VRS®-T joints were equal to these requirements in 

every respect. 

From an existing DN 125 pipeline, a 650 metre 

long DN 125 hydrant pipeline was laid to the municipal 

boundary of Lützelflüh as a first stage. 

Despite of the biting cold, the laying work, which 

was done by Anton Siegenthaler of Schwanden in 

The municipality of Rüderswil in winter 

A 650 metre long hydrant pipeline of Duktus DN 125 pipes ensures 

that there is adequate capacity for supplying fire-extinguishing 

water 

Laying of the hydrant pipeline in the Sonnhalde area in the 

Emmental region 

the Emmental region, was completed to an impeccable 

technical standard and on time, and the 

two Emmental municipalities now have a safe and 

reliable system for supplying fire-extinguishing 

water and an up-to-date way of fighting fires. 

The Škoda factory in mladá Boleslav puts its 

money on fm Approval 

In the course of work to expand the Škoda’s main 

site in Mladá Boleslav in the Czech Republic, it 

was necessary for fire-fighting systems to be expanded. 

The car maker will expand its capacity at 

the home works by 2012. In planning the fire protection, 

emphasis was placed on having the very 

highest quality. 

Duktus litinové systémy was able to supply exactly 

what the customer asked for: pipelines of ductile 

iron pipes with FM Approval. Jirí Mlynár, Duktus 

Sales Manager in the Czech Republic, said: “Expansion 

is an important step in Škoda’s strategy 

for growth. The new M13 building was to be 

equipped with a safe and reliable fire protection 

Crucial to the placing of the order was FM Approval, which the 

Duktus pipes have 

190 metres of ZMU pipes was laid for the fire-extinguishing water 

pipelines in the Škoda plant 

system and FM Approval was a prerequisite for 

the placing of an order for the pipeline systems. 

This was a requirement that Duktus was able to 

meet. We supplied 190 metres of DN 300 nominal 

size ductile iron pipes with a ZMU external 

coating and the proven BLS®/VRS®-T joint. The 

ZMU coating stops the cast material from coming 

into direct contact with the soil, and this ensures 

that there is outstandingly good protection 

against leakage currents. This was also an explicit 

requirement which the client had, in addition to 

the FM Approval.” 

The first sod was turned to begin the expansion 

on 15 April 2011, on the occasion of the celebrations 

to mark the 20th anniversary of the association 

with Volkswagen. The work of laying the pipelines 

for fire-extinguishing water, which was carried 

out by KSK Praha, went off without a hitch 

and was completed in September 2011. Duktus 

had already made a good impression in the Bohemian 

town of Mladá Boleslav in the spring of 

2011 when it supplied ductile iron drinking water 

pipes (see our report in inform 2/2011). 

A view of part of the Škoda plant in Mladá Boleslav

The machining of fittings 

starts at Duktus in hall 

A REPORT By WOLfGANG BRUGGER, hEAD Of PRODUCT DEvELOPmENT 

Gusskomponenten GmbH (GKG) had for many 

years been supplying fittings of the DN 80 to DN 

300 nominal sizes with restrained push-in sockets 

(BLS®/VRS®-T joints), so when the company 

closed down Duktus was called upon to respond 

very quickly to the new situation. In a very short 

time, the entire range of GKG products had to be 

moved and split up between existing or new fitting 

suppliers. 

Time was pressing. A project team was therefore 

put together immediately and got down to the 

hard work of moving the production of the fittings 

to ensure that we would still be able to supply 

our customers. 

In the midst of the turmoil of GKG being wound 

up, the getting together and transport of the pattern-making 

equipment for the fittings which, 

though owned by Duktus, was still stored on 

GKG’s premises, and the production of the drawings 

and basic information needed by each of 

the suppliers for an initial quotation proved to be 

a particular challenge and test of patience. 

To safeguard the high quality of the fittings, a 

The first delivery of volume-produced fittings in May 2011 

Newly set up system for the abrasive blasting of fittings at Duktus in Hall 

decision was made that, in the case of the new 

suppliers who had now been recruited, the machining, 

pressure testing and coating of the components 

concerned would be carried out inhouse 

by Duktus. To this end, there had to be 

negotiations with the liquidator of GKG on the 

purchase of individual machines and systems to 

enable production to go ahead quickly and inexpensively. 

Despite tremendous efforts, it was not possible to 

get all the equipment required into Duktus’s possession 

by way of negotiation before GKG’s 

equipment was auctioned. We were therefore 

compelled to bid for the final machines that were 

still required by Duktus at the auction of GKG’s 

equipment on 1 July 2011 in Hall. 

Because the first batches from volume production 

were standing in the yard as early as the 

beginning of May, we were permitted, with the 

agreement of the liquidator of GKG and even 

though they did not belong to us as yet, to put 

certain machines into operation and train suitable 

personnel on them. 

Since then, we have been carrying out the operations 

required on the deliveries from the new suppliers, 

such as pressure testing, machining, abrasive 

blasting and coating, at Duktus in Hall. 

When the project started in January this year, the 

overriding aim was to ensure security of supply 

and this, through compromises and improvisation, 

had to be achieved at all costs. As the delivery 

season progressed and the number of deliveries 

of volume-produced parts increased, there 

was also a steady fall in the risk we ran of not 

being able to supply our customers properly. 

Now that the process of doing the post-production 

work on the fittings has successfully got under 

way, the important thing is to make full use of 

this capacity and to organise it in the most economical 

way. 


Duktus extends the 

term of its sponsorship 

of the Waterfalls SOS 

Children’s village 

Last year, one of the things that Duktus’s donation 

to the Waterfalls SOS Children’s Village 

did was to get a well project for supplying 

drinking water underway. This made Waterfalls 

independent of the unreliable water supply 

from the local municipal utility. For the first 

six months after the work of drilling the well 

was completed, the entire drinking water requirements 

of the SOS families could be covered, 

as well as the water needed for the vegetable 

gardens, which make an important 

contribution to the families’ daily diet. Unfortunately, 

there has been a severe drop in the 

amount of water pumped from the well over 

the past few months. This is due mostly to the 

nature of the ground, which makes drilling 

difficult, but also to a lack of technical equipment 

to enable suitable spots to be calculated 

accurately. To provide a sustained solution to 

the problem of water, a second bore of a 

greater depth is urgently needed. Duktus has 

therefore decided to extend the term of its 

sponsorship so that the work needed to extract 

water successfully can be put in hand 

with this year’s donation. 

Gary Birditt, National Director of the SOS Children’s 

Villages Organisation in Zimbabwe is 

happy about Duktus’s commitment: “We look 

upon it as an honour that Duktus is supporting 

us for another year, and in this way is 

helping us to implement measures to improve 

health, but, first and foremost, obtaining a 

supply of clean water.” 

The children, mothers and employees at the Waterfalls SOS 

Children’s Village are soon to have enough clean water available 

to them again with the help of Duktus’s donation


hessentag 2012 in Wetzlar 

ThE DUKTUS PIPE DEPOT ChANGES INTO AN OPEN-AIR vENUE 

The Hessentag (Hesse Day) is the federal state of 

Hesse’s annual festival and Wetzlar is in a frenzy 

getting ready for the 2012 Hessentag, to be held 

from 1 to 10 June. This is the festival’s second 

time round in the cathedral city on the river Lahn. 

Duktus is making parts of the pipe depot available 

for the open-air venue in the Dillfeld industrial 

park. Well over 30,000 spectators will be able to 

watch the top acts at Hesse’s festival on a giant 

show stage against the backdrop of the Duktus 

foundry. The band Silbermond will be wowing 

fans here on 7 June 2012 on its “Himmel auf” 

tour. What other guests will be appearing in the 

pipe depot arena is still a secret. What we do 

know is that the venue in the Dillfeld Park is a 

very good location, with good access for the various 

transport links. The grounds of Duktus’s 

neighbour, Buderus Edelstahl will be used as a 

car park, so visitors will not have far to walk. 

The construction work to connect the Dillfeld industrial 

park to federal highway B277 and to the 

turnoff from the A480 autobahn began on 12 

September 2011. Duktus too has got off to a flying 

start in getting everything ready for moving 

the pipes on the venue. As we hear from Michael 

Brockers, of Technical Planning and Environmental 

Protection at Duktus in Wetzlar, the first step is 

to make suitable agreements with the city of Wetzlar 

authorities so that both sides have a basis for 

planning: “It is quieter for us during the winter 

months, which are now almost here, so we are 

making use of this time to organise the storage of 

the pipes to suit the needs of the Hessentag. The 

areas on the park that are not being used for the 

event itself and the free areas that we still have on 

the grounds of the Sophienhütte foundry will be 

enough to allow us to store adequate quantities 

of pipes in April and May at the beginning of the 

main installing season.” The operation is due to 

be completed by the end of 2011, because the 

city will then begin constructing an emergency 

escape route running in a northerly direction and 

The Open Air Festival forming part of Hessentag 2012 will be 

taking place in the northern part of the Duktus pipe depot 

the whole of the backstage area will also have to 

be levelled and prepared. The main emergency 

escape route will run over the bridge over the 

river Dill and through the Duktus factory grounds. 

A landing area for helicopters is available opposite 

the administration building. Duktus CEO Stefan 

Weber is confident that consultation between 

the people involved will ensure that everything 

goes off as planned: “As a company which has 

been producing cast iron pipes at the Sophienhütte 

works in Wetzlar for 110 years, we naturally 

feel that we have an obligation to our city. We are 

happy to be able to support our home city, where 

many of our employees live, as much as we possibly 

can. After all, the guests who come to the 

Hessentag from the region and from all over 

Hesse are in fact, in a sense, our customers, because 

most of them get their drinking water from 

ductile iron pipes from Wetzlar. How we can be 

part of the Hessentag and in presenting our company 

as an employer and an important partner to 

the regional suppliers of drinking water is something 

we are looking into at the moment. One 

thing we have in mind is collaboration with other 

companies on the site who we co-operate with in 

training our junior employees. We also plan to 

celebrate our traditional Family Day in conjunction 

with the Hessentag. Our readers will be 

learning more about all this in the next issue of inform.” 

After the Hessentag, the facilities on the Dillfeld 

Park will revert to their old state, but with a slight 

advantage for Duktus. The storage areas will 

have been improved and the fresh opportunities 

offered by the link between the Dillfeld Park and 

the B277/A480 roads will be there to be exploited 

in the future. 

A special training exercise 

fIRE BRIGADES, EmERGENCy AID WORKERS AND A SPECIAL 

RESCUE TEAm GOT TRAINING IN EmERGENCy CONDITIONS 

An emergency can be hell: it hits unexpectedly and hard, and sometimes so suddenly as to defy 

description. Emergency services carried out a training exercise for exactly this on 17 September 

2011 on the grounds of the Duktus works in Wetzlar. The exercise, worked out by Erwin Strunk, head 

of the Wetzlar fire brigade and Oliver Roland, deputy head of the Buderus Edelstahl works fire brigade, 

had four strategic aims. It was to be: the exercise between works fire brigades and the public 

fire brigade called for by the office of the president of the local administrative district, the exercise 

done to complete the 3-year vocational training course for assisting rescuers given by the German 

MHD (“Maltese Cross”) emergency aid service, a baptism of fire for a number of the Wetzlar fire 

brigade’s young fire-fighters, and a debut in Wetzlar for the “Special Rescue” fast response team of 

the Gießen fire brigade. It was possible because Duktus and Buderus Edelstahl had already stated 

that they were prepared to make the buildings needed for the exercise available on their own land 

and to include the exercise in the planning for other operational requirements. 

Michael Brockers, Duktus’s fire protection officer, and Elvira Sames-Dickopf of Duktus Marketing at 

Wetzlar, who witnessed the exercise on site, were impressed by the performance of everyone involved 

and by the disciplined way in which they worked: “This exercise has shown that in an emergency 

we can rely on the units working together properly. “Hats off to such devotion to duty and to 

the immaculate planning.” 

An exercise on the top part of the water tower: A “casualty” being rescued by rope by the “Special Rescue” fast response team, which 

is specially trained in both theory and practice for going into action at great heights and depths and in confined spaces


Day of Action and Ramma Damma day at Duktus 

A mOTIvATED WORKfORCE, GOOD ATmOSPhERE AND GREAT RESULTS 

At Duktus in Wetzlar people call it the ‘Day of 

Action’ and in Hall it’s ‘Ramma Damma’ day. 

They both mean the same thing: cleaning, clearing 

and making improvements to the site together 

with colleagues, fostering a sense of togetherness 

and then having a good time. 

On 24 September 2011, some 60 helpers got 

together in the Wetzlar factory. As well as the 

painting work done at many areas of the Production 

department, the reserved spaces in the car 

park were re-organised and the coloured markings 

repainted. Repair work to various holes in 

the ground, cleaning out and tidying of the materials 

store, and cleaning of the rail tracks for transporting 

the pipes were dealt with just as professionally 

as was the putting-up of notices at all the 

Duktus information points in the factory. For the 

first time, a special Duktim (Duktus Ideas Management) 

action was carried out on which all the 

“actioneers” had to look for danger points for 

potential accidents. The three best results were 

rewarded with a voucher for 50 Euros to use at 

the DIY retailer OBI and two petrol vouchers for 

25 Euros each. Also part of this year’s day of 

action was the award of sponsorships. Every- 

Florian Häusler (on the left) of Sales Germany Order Management 

and trainee Stefan Brück put up information point notices in the 

Wetzlar factory 

body who had taken on a sponsorship was presented 

with a t-shirt. A convivial barbecue from 2 

p.m. on brought the Saturday of hard work to an 

end. 

The Ramma Damma day at Hall, held in the 

most beautiful autumn weather, found a good 80 

employees at work on 1 October 2011. Helping 

them were ten trainees and apprentices from 

Wetzlar, who thought it very positive to be able to 

get to know their Austrian colleagues. The “sites” 

were scattered all over the factory and grounds. 

The external facilities were cleaned, and the now 

famous name Duktus in the garden in front of the 

factory, last edition’s cover picture, underwent 

some reworking, as also did the colour design of 

the stairwells. One fun way of putting across a 

serious message was also introduced: mirrors 

were put up with the message that those reflected 

are the ones responsible for quality, safety 

and tidiness. 

All the Ramma Damma actioneers looked forward 

excitedly to the great prizes to be won on 

the tombola at the end of the day. The buffet 

meal, as always, was absolutely delicious and 

plans were already being hammered out at various 

tables for the next event. 

A friendly get-together once the work was finished 

Maria Hörtnagl (on the left) and Maria Medwed, two Accounts employees, rework the Duktus name in the garden in front of the factory 

at Hall 

Trainee Jaqueline Bablich battling with the weeds in the car park 

at Wetzlar 

Klaus Marksteiner, Head of Work Scheduling and co-ordinator of 

the Duktim process at Hall with trainees and apprentices from 

Wetzlar 

Haci-Emin Sert (on the left) and Renno Lehnhausen, of Foundry 

Production Wetzlar, painted the black and yellow safety markings 

Assistants to the executive management at Hall, Karin Lung (on 

the left) and Andrea Gatt, made sure the entrance area was spick 

and span


Welcome to Duktus 

OUR NEW mEmBER Of STAff SEBASTIAN POhL AND SIx TRAINEES TAKE ThEIR PLACE ON ThE STARTING LINE 

Sebastian Pohl 

Since 30 June 2011, 

Sebastian Pohl has 

had an impressive 

piece of certification 

in the bag. The overall 

mark this newly 

qualified Bachelor of 

Business Administration 

and Engineering 

received from the University of Applied Sciences 

Mittelhessen on the dual vocational and academic 

course in business administration and engineering 

with electrical engineering as a main 

subject was “very good”! The 24-year-old managed 

to complete the StudiumPlus course in just 

3 years. In the “Energy and Technical Infrastructure” 

department at Duktus in Wetzlar, he has 

now been responsible since July for the operational 

high-voltage and medium-voltage electrical 

systems and for the switchgear. “I am an energy 

management officer and as well as that my main 

tasks also include climate policy, and especially 

CO2 management, energy management and 

to provide assistance to the technical works management”, 

is how Pohl explains his range of activities. 

This is the second time he has worked at 

Duktus because he completed a training course 

as an electronics engineer here between September 

2004 and June 2007. Even then he impressed 

people, and his good performance 

meant that he was able to take the final examination 

early. Born in Wetzlar but now living in 

Braunfels, Sebastian worked as a works electronics 

engineer in the maintenance department. In 

the summer of 2007, he decided to catch up and 

qualify for university-level education at the Werner-von-Siemens 

School in Wetzlar. Even in his 

free time Sebastian keeps the throttle open because 

his hobbies include not only motor cycling, 

but also he also works for the Technical Relief organisation 

(THW) and in local politics. 

700 hours to build an airplane 

JOhANNES mELChER BUILDS mODEL AIRPLANES IN hIS SPARE TImE 

Johannes Melcher has many hobbies but there is 

one that is particularly close to his heart – building 

model airplanes. Over the past few years it 

has been a hobby in which he has invested a lot 

of his spare time. Born in Innsbruck, he took a 

part-time job with Duktus in Hall in January 2006 

in the heat treatment department. Having completed 

his course in wood engineering at the 

Higher Technical Institute and done his military 

service, he wanted to use this job as a way of 

filling the time before resuming his studies. But 

sometimes things don’t work out as we expect – 

the wood engineer liked it so much at Duktus that 

he stayed and is today deputy foundry manager. 

What he finds fascinating about his hobby, in 

spite of all the demands it makes, is not only 

working with different substances and materials, 

but also the study of aerodynamics, something 

which is essential for a flyer even of model airplanes. 

A few weeks ago Johannes Melcher completed 

what is his biggest project to date: with 

immense patience and 700 hours of work, he 

built in his modeller’s workshop at home a 1:2.3 

scale model of a veteran glider dating from 1962. 

However, after this tour de force the 27-year-old 

wants to return to his other hobby, flying, and his 

reward for the many hours spent in the workshop 

is to spend some enjoyable hours in the air. 

Three trainees and apprentices x 2 

On 1 August and 1 September 2011, six young 

people set out as trainees and apprentices to 

learn their chosen professions at Duktus in Wetzlar 

and Hall respectively. Jaqueline Bablich and 

Stefan Brück have begun training as industrial 

clerical officers at Duktus in Wetzlar. Steven Wagner 

has opted for an apprenticeship as an industrial 

mechanic. 

In Hall, three apprentices have got off to a good 

start. Philipp Altendorf and Michael Henökl 

would like to become works electricians, while 

Markus Wegscheider aims to become a mechanical 

engineer. 

Stefan Brück, Jaqueline Bablich and Steven Wagner (l. to r.) are 

happy to have found places as trainees and an apprentice with 

Duktus in Wetzlar 

Philipp Altendorf, Michael Henökl and Markus Wegscheider (l. to 

r.) are adding their strength to the group of apprentices at Duktus 

in Hall 

Johannes Melcher with two of his model aircraft. The model glider (on the right) is a 1:2.3 scale copy of a German design dating from 1962 and has a wingspan of 6.5 metres and a takeoff weight of 21.5 

kilograms. He needed about 700 hours of work to complete this project

Success on the track 

DUKTUS TEAmS GIvE IT ThEIR ALL IN TWO RUNNING EvENTS 

Record turnout for the Over the Bridges 

Race in Wetzlar 

Two teams from Duktus took part in Wetzlar’s 

traditional event, the annual Over the Bridges 

Race, running a 2000 metre lap through the 

beautiful old-town. 

The large number of amateur athletes that turned 

out for the event on 2 September 2011 was a 

sight enjoyed by many spectators. More than 

3,500 runners from companies, clubs, associations 

and schools in the region lined up for the 

start. “We were happy to be one of the teams 

running again. The atmosphere was super and 

so was the weather, but above all, we think it’s 

great to run the Over the Bridges Race for a 

good cause”, said Peter Macha, speaking for the 

whole team. The team wore stylish red running 

shirts and was able to put in a good performance 

in the overall field of 631 adult teams. 

“Germany’s longest classic race” – The 13th 

Rennsteig Relay Race over 171.3 kilometres 

On 6 a.m. on 18 June 2011, the starting signal 

was given for Germany’s longest classic race. 

This is a team competition which starts in Blankenstein 

on the river Saale and takes the runners 

along the Rennsteig trail to Hörschel on the river 

Werra near Eisenach, through the states of Thuringia 

and Franconia. 

The Rennsteig is one of the best-loved long-distance 

hiking trails in Germany and is the highland 

trail through the Thuringian Forest. 

When the race was held for this 13th time, the 

competitors included the team known as the 

“THE CAST IRONERS” – a relay team consisting 

of employees of HTI Thüringen GmbH, Duktus of 

Wetzlar and customers of both companies. 

The idea of taking part in the “classic race” was 

suggested by an employee of HTI Thüringen KG 

of Erfurt and Uwe Strich, Duktus’s Sales Manager 

there. The idea became reality when the application 

to take part was made. Just four minutes 

into 2011 and with the online applications only 

open since midnight, all 230 positions on the 

starting line had already been allotted. Only 

when the team’s application was successful did 

the initiators happily get started on their New 

Year celebrations. After that, the long preparatory 

phase began. Runners, escorting cyclists and a 

non-running team manager were found and organisational 

matters had to be dealt with. All the 

runners did their own training. When the morning 

of 18 June 2011 dawned, the team running the 

first two stages had already been on the road 

since 3.30 a.m. in order to be at the start in 

Blankenstein in time. The countryside around the 

Rennsteig and the widely varying weather – 

wind, rain and sometimes even sunshine – are 

what make the relay so special. Silke Hackl, Duktus’ 

Sales Manager for Germany, who cheered 

on the CAST IRONERS enthusiastically, got a 

very clear impression of both these things at the 

changeover point in 

Allzunah. After 15 

hours, 25 minutes and 

45 seconds, the 

team’s final runner 

crossed the finishing 

line in Hörschel near 

Eisenach after run- 

Michael Malter on his way along the course 

Thumbs up for Wetzlar’s Over the Bridges Race, the wonderful weather and the Duktus team spirit. L to r.: Peter Macha, 

Jacqueline Bablich, Lutz Cromm, Patricia Spilka, Annika Beyer and Stefan Weber 


THE CAST IRONERS, l. to r.: Michael Malter, Uwe Strich, Carsten Walther, Christian Dettler, Robert Heiduk, Mario Otto, Andreas Lotz, 

Danny Hildebrandt (Team Manager), Mario Sipeer, Jens Bölitz, Maik Neubert, Matthias Brand, Dirk Bethmann, Veit Exner 

ning 171.3 kilometres. Everything had gone well 

and the team, tired but satisfied, embraced each 

other in celebration. That the team came in 147th 

among the 220 teams that reached the finishing 

line was something that deserves no more than a 

passing mention. 

Next year they want to try again, and perhaps, 

this will become an ongoing tradition for HTI and 

Duktus, and their business partnership will also 

become a sporting one. 

And on the 

golf course! 

AN INvITATION fROm SOvAL AND 

DUKTUS 

On 8 June 2011, Soval and Duktus invited some 

fifty business partners from the area around Paris 

to play golf on the magnificent course at Meaux 

and then to enjoy a family meal in a genial atmosphere. 

The award ceremony for the winners took 

place later and every player was able to take a 

special golf bag and “Soval-Duktus shoes” home 

with them. 

A relaxed atmosphere as participants set out for the Soval-Duktus 

golf tournament in Meaux

Duktus S.A. 

Innsbrucker Straße 51 

6060 Hall in Tirol 

Austria 

T +43 (0) 5223 503-215 

www.duktus.com 

Duktus 

Rohrsysteme Wetzlar Gmbh 

Sophienstraße 52-54 

35576 Wetzlar 

Germany 

T +49 (0) 6441 49 2401 

F +49 (0) 6441 49 1455 



Tiroler Rohrsysteme Gmbh 

Innsbrucker Straße 51 

6060 Hall in Tirol 

Austria 

T +43 (0) 5223 503-0 

F +43 (0) 5223 43619 



litinové systémy s.r.o. 

Koˇst’álkova 1527 

266 01 Beroun 

Czech Republic 

T +420 311 611 356 

F +420 311 624 243 



Pipe Systems fzCO 

South Jebel Ali Free Zone 

JAFZA View 18/Office No. 909 

Dubai/U.A.E. 

T +971 (0) 4886 56 80 

F +971 (0) 4886 56 40 

www.duktus.com

inform 11.2011 e (pdf file 2 MB) - Duktus

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?