LSAW Welded Pipe For Gas Conveying.

LSAW Welded Pipe For Gas Conveying.

LSAW STEEL PIPE ( Longitudinal-seam Submerged Arc Welded) Longitudinal-seam Submerged Arc Welded (LSAW) pipes were made of steel plates cut from leveled hot rolled coils by both the JCOE and UOE (the forming process in which the plate like the letter “J”, “C”, “O” or “U” shape, then expansion)...

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LSAW STEEL PIPE (Longitudinal-seam Submerged Arc Welded)

Longitudinal-seam Submerged Arc Welded (LSAW) pipes were made of steel plates cut from leveled hot rolled coils by both the JCOE and UOE (the forming process in which the plate like the letter “J”, “C”, “O” or “U” shape, then expansion) forming processes.

The mechanical properties of the LSAW welded pipe base metal and weld metal were tested, and the results were in accordance with the corresponding pipe specification API SPEC 5L or DNV-OS-F101, which showed that LSAW pipes could be used for oil and gas pipelines.


Quality Standard:
LSAW, DSAW:

API 5L LSAW Line Pipe

GB/T9711 Petroleum and natural gas industries--Steel pipe for pipelines
IS : 1978-1982:Steel tubes for use in transportation of oil; gas & Petroleum products?
BS: 1387 Steel Tubes for use for Water, Gas, Air and Steam

EN10217 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties

Coating Standard:
ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water
ISO 21809 Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systems
DIN 30670 Polyethylen coatings of steel pipes and fittings

Steel Grade:

BS:1387, EN10217:S185, S235,S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33, St37, St44, ST52
API 5L: A, B, X42, X46, X52, X56, X60, X65 X70
GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555


Size:
LSAW, DSAW: SAWL
Outer Diameter: 406mm-1820mm
Wall Thickness: 5.0mm-80mm
Length: 6mtr-12mtr

End: square ends (straight cut, saw cut, and torch cut). or beveled for welding, beveled,

Surface
: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy, Fusion Bond Epoxy, 3-layers PE)

Packing:  

Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.

Test:

Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield
strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.
Mill Test Certificate:EN 10204/3.1B
Third party inspection:SGS, BV, Lloyds etc. 



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