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Line pipe for drinking water, industrial
waters and wastewater |
SALZGITTER MANNESMANN LINE PIPE has been
supplying the water industry with HFI
welded steel line pipe for more than
twenty years. Whether drinking water
supplies or wastewater disposal, steel
pipe is the best solution for every
application, both technically and
economically.
 Pipe
structure
SALZGITTER MANNESMANN LINE PIPE water
line pipe is an HFI longitudinally
welded pipe with a three layer plastic
coating and a cement mortar lining
matched to the service conditions in
hand. An additional top coat of fiber
cement mortar can be applied where
mechanical stresses require it.
Joining technology
SALZGITTER MANNESMANN LINE PIPE is the
only pipe producer with a complete
spectrum of joining techniques such as
weld, socket and clamp connections in a
range of designs for all types of
service conditions.
The manufacturing programme is
supplemented by an array of fittings for
the various joints as well as
accessories for the pipe laying process:
weld joints: line pipes with butt-weld
joint and slip-weld joint plug
connections: line pipes with socket
joints clamp connections: line pipes
with flange connection and coupling
 Steel
as a line pipe material is suitable for
a great diversity of joining techniques
and offers wide freedom in the design,
construction and operation of pipelines
in keeping with the various pressure
levels, operating conditions and media
to be transported.
For instance, socket pipe which is
mechanically protected by an FCM coating
is optionally available with FCM right
to the pipe end. This greatly
facilitates field coating during pipe
laying.
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b)
Line pipe gas and oil
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Line pipe for natural gas and other
gaseous media, oil and other flammable
media
Steel line pipe has been used
successfully for decades now in the
transportation of gases, flammable
liquids and solids.
Given the high pressure levels
frequently involved in the
transportation of these media, steel is
the optimum pipe material and it remains
unparalleled in terms of safety and
reliability for a long service life.
Pipe structure
SALZGITTER MANNESMANN LINE PIPE line
pipe for gases and flammable liquids is
a longitudinally HFI welded pipe with a
three layer plastic coating. An
additional top coat of fibrous cement
mortar can be applied where mechanical
stresses require it.
The HFI welding process guarantees high
production reliability and
close-tolerance dimensional accuracy in
the pipe. In combination with top
quality three-layer corrosion
protection, the outcome is a pipe
product that meets all the requirements
of the intended application.
 Joining
technology
Butt weld joints have established
themselves as the customary connection
method with line pipe for gases or
flammable liquids. Where required, the
slip welding joint is also used
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c) Oilfield tubes (OCTG)
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 Oilfield
tubes from SMLP are used in the oil and
gas industry around the globe. They are
manufactured using state-of-the-art
technology and equipment – from steel
melting right through to HFI welding,
including continuous in-process checks
as well as destructive and
nondestructive testing.
A uniform pipe wall thickness and
minimum out-of-roundness levels are
important criteria in the manufacture of
casings to ensure excellent collapse
resistance.
Oilfield tubes are manufactured in
compliance with API 5 CT requirements in
steel grades including H 40, J 55, K 55,
N 80 and HC 80.
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