TPI January 2009

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January 2009 Tube Products International 27
developmentsproducts &
Longitudinally welded steel pipe
Salzgitter Mannesmann Line Pipe (MLP) is a manufacturer of HFI (high frequency
induction) longitudinally welded steel pipe, with over 100 years’ experience in
pipe production.
This includes oil and gas line pipe,
pipe for drinking water and sewage
systems, tubes for machinery and
plant construction, oilfield tubes,
pipe for long-distance heating
systems and structural tubes.
The company manufactures
products in a wide range of steel
grades, with outside diameters of
33.7 to 610mm (1.5" to 24") and
pipe wall thicknesses of 3.6 to
20.6mm (0.14" to 0.812").
The company has also expanded its full range standard programme of coatings
and linings, such as PE, PP, (fibre) cement mortar and epoxy lining (flow coat),
to ensure the highest possible level of pipeline safety against corrosion and
mechanical damage, and to minimise frictional resistance on the inside wall of
gas line pipe, by an epoxy resin coating (fusion bonded epoxy FBE) according
to ISO 21809-2:2007.
The single-layer coating has a maximum thickness of 700µm and is used for
corrosion protection, eg for onshore products. Additional dual-layer coatings
are currently under development, which will be applied for special properties,
for example as ‘FBE rough coating’ for an improved frictional resistance or for
an enhanced abrasive resistance.
A reference production of the single-layer FBE-coating has been manufactured
for E.ON UK. The total length of the coated pipes was approximately 3,000m,
with outer diameter of 219.1mm and 323.9mm, and wall thickness from 8 to
20mm.
Salzgitter Mannesmann Line Pipe GmbH – Germany
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Longitudinally welded steel pipe S S
Seamless high
pressure boiler
steel tube
Jiangsu ZhenDa Steel Tube Group was
founded in 1991, and has grown into
a group of eight subsidiaries, with an
annual production capacity of 1,100,000
tons.
The group’s ‘Hao Ren’ products were
awarded the Jiangsu Famous Trademark
in 2004, while its seamless high pressure
boiler steel tube was given the Gold
Cup by the National Steel Industrial
Association for its good quality. In 2005
the group became the director of the
National Association of Pipe Unit.
Wuxi ZhenDa Bearing Steel Tube Co
Ltd is one of the subsidiaries of Jiangsu
ZhenDa Steel Tube Group.
The company, which was founded in
2004, has a mill covering an area of
70,000m2, and an annual production
capacity of 100,000 tons.
Jiangsu ZhenDa Steel Tube Group
– China
Wuxi ZhenDa Bearing Steel Tube
Co Ltd – China
Modern Tube Industries Ltd is a
manufacturer of stainless steel welded
and seamless tubes and pipes, located
in the west of India, around 250 miles
north of Mumbai.
The company manufactures tubes and
pipes to international standards, and
has access to quality raw materials,
including austenitic and martensitic
stainless steel, SS304, 304L, 310, 316,
316L, 201, 202 and 400 series, at short
delivery times.
The range of products includes round,
square and rectangular shapes.
Stainless steel seamless and welded
tubes from India
88.9mm diameter seamless pipes are
available in wall thicknesses from 0.8
to 8mm, while 150mm welded (rolled)
products range from 0.5 to 4mm wall
thickness.
The company produces fabricated
tubes in diameters ranging from 200 to
600mm, with wall thickness of 12mm.
The tubes and pipes can be delivered
annealed and pickled.
Modern Tube Industries Ltd – India
Copper and copper
alloy tubes
Aishloni Copper Alloys Pvt Ltd, India, is
a manufacturer of copper and copper
alloy tubes and sections, catering
to OEMs, governments and private
organisations.
The company offers finished and semi-
finished copper and copper alloys
tubes, including 90/10 cupro nickel and
admiralty brass tubes.
The company can manufacture products
according to customer specifications.
Aishloni Copper Alloys Pvt Ltd – India