Steel Sheet Piling Supplier - China Iron And Steel Group Limited

Tel:   +86-25-84501790
WhatsApp: +86 18260089181
Email    :  info@chinasteel-group.com

Large Diameter Pipe

Product range:

SAWL pipes ∅ 508 - 1422 mm (20-56”), wall thickness up to 50 mm (1.97”);
ERW pipes ∅ 508 - 530 mm (20-21”).
Standard length of all pipes is from 11.6 to 12.2 m (38 – 40 ft).

BASIC INFO

 

At customer’s request, we supply pipes with external three- and two-layer аnti-corrosive coating and internal flowor аnti-corrosive coating. Pipes are certified by American Petroleum Institute according to API Spec 5L (License No. 5L-0276) ISO and according to Shell requirements.

In 2007 a compliance certificate was issued for VSW products according to Det Norske Veritas requirements, DNV-OS-F101 standard
for offshore pipeline systems. This allowed OMK to win an international tender for supply of 280 thousand tons of pipes with diameter of 1220 mm (48”) and wall thickness 30.9, 34.6 and 41.0 mm (1.2”, 1.4”, 1.6”) in 2008-2009 to construct an offshore section of the Nord Stream gas pipeline on the Baltic Sea bed. Currently VSW has won a tender for supply of 440 thousand tons of pipes with diameter of 813 mm (32”) and wall thickness 39 mm for an offshore section of the South Stream Project (1,2 lines) gas pipeline on the Black Sea bed, and has already started deliveries.

Basic Equipment

Large Diameter Pipes are produced on two separate lines using different production methods – UOE Line and JCO Line. Pipes can be made with either one or two longitudinal welds.

UOE Line

Produces pipes with diameter of 508 – 1067 mm (20-42”) and wall thickness from 8 to 32 mm (0.28-1.26”), strength grade Х80. Design capacity is 1012 thousand tons of pipes per year.

JCO Line

Produces pipes with diameter of 508 – 1422 mm (20-56”) and wall thickness from 8 to 48 mm (0.28-1.89”), strength grade up to Х100, and working pressure up to 24.7 MPa (250 atm.). Design capacity is 950 thousand tons of pipes per year.

Product range and scope of application:

Standard Outside dia.,
inches (mm)
Wall thickness, mm Steel grade Scope of application
ISO 3183 20” (508) –
56” (1422)
8.0 – 48.0 Strenght class Gr.В –
X100 Steel L245 – L555
For construction of gas
and oil pipelines, water
transportation systems
both in oil and gas industry
DNV-OS-F101 20” (508) –
56” (1422)
8.0 – 48.0 Steel L245 – L555 Subsea pipe systems used
in the oil and gas sector
DIN 10217 20” (508) –
56” (1422)
8.0 – 40.0 Steel P235 – P265 Multi-purpose pipes
DIN 10219 20” (508) –
56” (1422)
8.0 – 40.0 Steel S235 – S460 Multi-purpose pipes

Production of large diameter SAWL pipes

Longitudinal electric-welded large diameter pipes are manufactured by submerged arc welding (SAW).

At present large diameter pipes can be manufactured by two independent lines having different pipe forming processes: UOE and JCO.

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