Ductile cast iron pipes with a cement mortar coating (ZMU) - Duktus

Ductile cast iron pipes with a
cement mortar coating (ZMU)
• Maximum protection against corrosion
• For trenchless laying techniques
• For harsh ground conditions and corrosive
and aggressive soils

Why
a cement mortar coating (ZMU)?
What are ZMU pipes?
As the zinc-plated pipe rotates, plastic-modifi ed cement
mortar based on blast furnace cement is applied to the pipe
in a uniform thickness for a fi shtail nozzle. The cement mortar
is then reinforced with a bandage. ZMU is available for
both drinking water (blue) and for waste water and sewage
(reddish brown).
An exhibit for an exhibition stand
showing a traction head for
trenchless applications
Advantages of the ZMU coating
Resistant to chemicals
• Under EN 545 and EN 15 542, ductile iron pipes with a
ZMU coating can be used in any type of corrosive soil.
Gives mechanical protection
• ZMU pipes can be laid in existing backfi ll material with a
maximum stone size of 100 mm. This is yet another reason
why ZMU pipes with the BLS ® joint system are widely
used for trenchless installation techniques.
• Because of the high impact resistance of the ZMU, the
pipes are particularly well suited to the usual rough treatment
they can expect on building sites.
Can be used for trenchless installation techniques
For the press-pull, auxiliary pipe, burst lining, horizontal direc-
tional drilling, rocket ploughing, and pipe relining techniques
and many others.
Economic advantages
• No need for exchanges of soil or for
additional bedding for the pipes, and the
soil excavated can be re-used.
• Major savings of time and money, because
the soil excavated does not have
to be taken away.
• Long-term anti-corrosion protection
(lasting for up to 140 years to DVGW
(German Technical Association for Gas
and Water) requirements) is obtained
for the pipes.

Advantages of ductile iron pipes
• Durability measured in decades (up to 140 years)
with the material properties unaffected.
• High load-bearing capacity (for internal and external
loads) with substantial safety margins.
• Both deep and shallow top cover are possible.
• Wall thicknesses, coatings and linings make the pipes suitable
for use in a vast variety of applications.
• A complete modular pipe and fitting system.
• The innovative BLS ® restrained joint system eliminates
the need for thrust blocks.
• Pipes are environmentally-friendly (sustainable and
recyclable and the materials used are inorganic).
• Drinking water and ground water are protected
by pipe walls which seal against diffusion.
• Cement mortar linings are safe for drinking water.
• Socket joints are capable of angular deflections
of up to 5°. Therefore the number of fittings required can
be reduced.
• The most economical and practical solution
on the market.
• Easy to connect and install.
• German quality.
• Certified to DVGW (German Technical Association
for Gas and Water) standard VP545, monitored by the
MPA NRW (North-Rhine Westphalia Materials Testing
Institute).
Ready for anything!

Buderus Giesserei Wetzlar GmbH
P.O. Box 12 40 • D–35573 Wetzlar
Phone: +49 6441 49 14 10
Fax: +49 6441 49 16 13
export.gussrohrtechnik@gussrohre.com
www.gussrohre.com
Buderus Pipe Systems FZCO
P.O. Box 262 446 • Dubai, UAE
Phone: +971 (0) 4886 56-80
Fax: +971 (0) 4886 56-40
sales@buderuspipeme.com
www.buderuspipeme.com
Tiroler Röhren- und Metallwerke AG
Innsbrucker Straße 51 • 6060 Hall in Tirol, Austria
Phone: +43 5223 503
Fax: +43 5223 43 619
office@trm.at
www.trm.at
© · BGW/RV · 052 · 11/09 · e 1 000 · BD