Buderus Manual on Trenchless Installation of Ductile Cast ... - Duktus

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<strong>Buderus</strong> <strong>Manual</strong> Trenchless Installation of Ductile Cast Iron Pipes List of contents: 1. Introduction ................................................................................ 2. Properties of ductile cast iron pipes ........................................... 8 3. Trenchless replacement of gas and water pipelines .................... 32 3.1 Push-pull technique ................................................................... 3 3.2 Auxiliary pipe technique ............................................................ 39 . Burst lining technique ................................................................ . Horizontal directional drilling technique ................................... . Ploughing technique .................................................................. 8 7. Pipe relining ............................................................................... 7 7.1 Pulling-in technique ................................................................... 77 7.2 Pushing-in technique ................................................................. 79 8. Pulling-in after steered pilot drilling ........................................... 8 9. A consideration of the economics of trenchless techniques ...... 92 10. Technical data sheets ................................................................. 98 11. Installation instructions .............................................................. 102 List of contents 7
Properties of ductile cast iron pipes 2. Properties of ductile cast iron pipes 2.1 The material Fig 2.1, Fountains in the park at the Chateau de Versailles 8 In the 17th century there were isolated instances where pipes made of cast iron were used for laying water-pipes on estates belonging to the aristocracy, such for example as at chateaus and country houses, in parks, and so on (Fig. 2.1). In the 19th century, with the coming of the Industrial Revolution, towns and cities and industry began to develop. The growth in the population accelerated and there was thus a growing need for an infrastructure to be created based on pipes for drinking water, gas and sewage. Cast iron in the form of pig iron is produced by using coke to reduce iron ore in a blast furnace, a process known as smelting. A particularly important type of smelter used in foundry work is the cupola furnace in which scrap iron and steel and pig iron are smelted with coke. Another typical process for producing cast iron is smelting in an electric induction furnace. In these smelting processes, some of the carbon goes into solution in the liquid iron, as a result of which the melting point of the pure iron goes down from about 1 0°C to a figure of 11 0°C. This is the most important prerequisite for the industrial and economical processing of cast iron, because it allows the consumption of energy, refractory materials and mould materials to be reduced. The second advantage of the carbon dissolved in the iron comes into play when the molten cast iron solidifies: the contraction in the volume of the iron as it changes from the liquid to the solid state counteracts any increase in the volume of the dissolved carbon which crystallises out. Consequently, articles made of cast iron generally have a dense microstructure free of cavities. The disadvantage of the elemental graphite in the cast iron is that it reduces the strength and ductility of the pure iron. In the course of solidification, the dissolved carbon normally crystallises in the form of graphite lamellae.
Page 1 and 2: Buderus Ma
Page 3 and 4: Buderus Ma
Page 6 and 7: 1. Introduction Introduction When t
Page 10 and 11: At x 100 magnification, these graph
Page 12 and 13: 10 3 kp cm Fig. 2.7 Steel Ductile G
Page 14 and 15: Fig. 2.11 How the pipes are produce
Page 16 and 17: 2.3 Development in the joint-making
Page 18 and 19: joints is DVGW Arbeitsblatt GW 3 8
Page 20 and 21: Longitudinal force-fit joints and t
Page 22 and 23: Longitudinal force-fit joints and t
Page 24 and 25: 2.3.2 Making the BLS ® joint Makin
Page 26 and 27: Fig. 2.21 Left lock Catch Right loc
Page 28 and 29: 2.4 Inside and outside protection I
Page 30 and 31: Inside and outside protection the c
Page 32 and 33: Reference documents [2.8] Gaebelein
Page 34 and 35: General What is said above is true
Page 36 and 37: Other pluses that the two technique
Page 38 and 39: Fig. 3.5 Hydraulic unit The press-p
Page 40 and 41: 3.2 The auxiliary pipe technique Th
Page 42 and 43: In the final stage of the operation
Page 44 and 45: 3.4 Requirements for the site Requi
Page 46 and 47: Reference documents
Page 48 and 49: Both the variants of the burst lini
Page 50 and 51: During the pulling process, the tra
Page 52 and 53: 4.3.2 Joints As in virtually all tr
Page 54 and 55: Reference documents 3
Page 56 and 57: Fig. 5.3 Assembly of the string of
Page 58 and 59:
the outlet nozzles. In rocky soils,
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5.3 General requirements Companies
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A prerequisite for this procedure i
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Table .1 provides an overview of th
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Installations Nominal size DN lengt
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Reference documents [ . ] DVGW Arbe
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Fig. 6.2 Traction vehicle Fig. 6.3
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6.4 Joints The longitudinal force-f
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Areas of application, advantages an
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Reference documents 7
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7. 2 A description of the technique
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Buderus Giesserei
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Fig. 7.8 Pushing in a pipe A descri
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7.5 Reference installations No. Loc
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[7. ] Rink, W.: Langrohrrelining mi
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In the second step, the pilot is up
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8.3 Outside protection Outside prot
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8.6 Reference documents [8.1] Richt
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A consideration of the economics of
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A consideration of the economics of
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[9.2] DVGW-Hinweis W 09: Auswirkung
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BLS ® restrained joint DN 80 to DN
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Technical data sheets 101
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General Pipes must not be: • drop
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Filling in the pipe pit DN 80 - DN
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DN 80 - DN 00 BLS ® joints There m
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Use of clamping ring joints DN 80 -
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Notice on assembly DN 80 - DN 00 BL
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Retrospective application of weldin
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11.2 Installation instructions for
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Inserting the locking segments DN 0
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Angular deflection DN 00 - DN 1000
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Disconnecting BLS ® joint disconne
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Shrink-on devices and protective ta
Page 126 and 127:
ZMU Before a pipe is cut, the ZMU s
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ZMU 127
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129
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131
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Buderus Manual on Trenchless Installation of Ductile Cast ... - Duktus

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