LSAW Steel Pipe

Description

Our company, located in Shandong Province, China, is a high quality steel manufacturer with reliable product quality. Supply all kinds of standard specifications of welded steel pipe, such as LSAW steel pipe, ERW steel pipe, etc.

Product Description

LSAW steel pipe (Longitudinally Submerged Arc Welding abbreviated as LSAW) is a professional expression term for straight seam submerged arc welding steel pipe. Pipes produced by submerged arc welding and diameter expansion.
According to different molding methods, it can be divided into:
UOE steel pipe: After the edge of a single steel plate is pre-bent, it undergoes U-forming, O-forming, internal welding, external welding, mechanical cold expansion and other processes.
JCOE steel pipe: according to “J-C-O-E” pre-welding, forming, cold expansion after welding and other processes
HME steel pipe: formed by the mandrel rolling method according to “C-C-O”, cold expansion after welding and other processes.
Main features of LSAW steel pipe:
1) The steel pipe has a longitudinal weld, and the inner and outer welds are welded by a submerged arc welding.
2) After the overall mechanical diameter expansion treatment, the internal stress of the steel pipe is small and evenly distributed, which can effectively prevent stress corrosion cracking, and the dimensional accuracy is high, which is convenient for on-site welding construction.
3) Adopting the process of pre-welding and finishing welding, the welding process is stable and the quality of the weld is high.
4) The welding seam is easy to realize non-destructive flaw detection in the production process and field non-destructive flaw detection re-inspection in the use process.
5) The range of product specifications is wide, and it can produce steel pipes with small diameter and large wall thickness as well as large diameter and large wall thickness.
Material
Q235A, Q235B, Q23b, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, Q345, L245, L290, X42, X46, X70, X80

Standards

Standard	Grade	Chemical Composition(max)%					Mechanical Properties(min)
		C	Si	Mn	P	S	Tensile Strength(Mpa)	Yield Strength(Mpa)
API 5CT	h40	–	–	–	–	0.030	417	417
	J55	–	–	–	–	0.030	517	517
	K55	–	–	–	–	0.300	655	655
API 5L PSL1	A	0.22	–	0.90	0.030	0.030	335	335
	B	0.26	–	1.20	0.030	0.030	415	415
	X42	0.26	–	1.30	0.030	0.030	415	415
	X46	0.26	–	1.40	0.030	0.030	435	435
	X52	0.26	–	1.40	0.030	0.030	460	460
	X56	0.26	–	1.40	0.030	0.030	490	490
	X60	0.26	–	1.40	0.030	0.030	520	520
	X65	0.26	–	1.45	0.030	0.030	535	535
	X70	0.26	–	1.65	0.030	0.030	570	570
API 5L PSL2	B	0.22	0.45	1.20	0.025	0.015	415	415
	X42	0.22	0.45	1.30	0.025	0.015	415	415
	X46	0.22	0.45	1.40	0.025	0.015	435	435
	X52	0.22	0.45	1.40	0.025	0.015	460	460
	X56	0.22	0.45	1.40	0.025	0.015	490	490
	X60	0.12	0.45	1.60	0.025	0.015	520	520
	X65	0.12	0.45	1.60	0.025	0.015	535	535
	X70	0.12	0.45	1.70	0.025	0.015	570	570
	X80	0.12	0.45	1.85	0.025	0.015	625	625
ASTM A53	A	0.25	0.10	0.95	0.050	0.045	330	330
	B	0.30	0.10	1.20	0.050	0.045	415	415
ASTM A252	1	–	–	–	0.050	–	345	345
	2	–	–	–	0.050	–	414	414
	3	–	–	–	0.050	–	455	455
EN10217-1	P195TR1	0.13	0.35	0.70	0.025	0.020	320	320
	P195TR2	0.13	0.35	0.70	0.025	0.020	320	320
	P235TR1	0.16	0.35	1.20	0.025	0.020	360	360
	P235TR2	0.16	0.35	1.20	0.025	0.020	360	360
	P265TR1	0.20	0.40	1.40	0.025	0.020	410	410
	P265TR2	0.20	0.40	1.40	0.025	0.020	410	410
EN10217-2	P195GH	0.13	0.35	0.70	0.025	0.020	320	320
	P235GH	0.16	0.35	1.20	0.025	0.020	360	360
	P265GH	0.20	0.40	1.40	0.025	0.020	410	410
EN10217-5	P235GH	0.16	0.35	1.20	0.025	0.020	360	360
	P265GH	0.20	0.40	1.40	0.025	0.020	410	410
EN10219-1	S235JRH	0.17	–	1.40	0.040	0.040	360	360
	S275JOH	0.20	–	1.50	0.035	0.035	410	410
	S275J2H	0.20	–	1.50	0.030	0.030	410	410
	S355JOH	0.22	0.55	1.60	0.035	0.035	470	470
	S355J2H	0.22	0.55	1.60	0.030	0.030	470	470
	S355K2H	0.22	0.55	1.60	0.030	0.030	470	470

Standards and Classifications

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CLASSFICATION	STANDARD	MAIN PRODUCTS
Steel Pipe for Fluid Service	GB/T 14291	Welded pipe for mine fluid sevice
	GB/T 3091	Welded pipe for low pressure fluid service
	SY/T 5037	Spirally submerged arc welded steel pipe for pipelines for low pressure fluid service
	ASTM A53	Black and hot-hipped galvanized welded and seamless steel pipe
	BS EN10217-2	Welded steel tybes for pressure purposes – delivery technical conditions – part2: Electric welded non- alloy and alloy steel tubes with specified elevated temperature properties
	BS EN10217-5	Welded steel tybes for pressure purposes – delivery technical conditions – part5: submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties
Steel Pipe for Ordinary Structure	GB/T 13793	Longitudinally electric resistance welded steel pipe
	SY/T 5040	Spirally submerged arc welded steel pipe piles
	ASTM A252	Welded and seamless steel pipe piles
	BS EN10219-1	Cold formed welded structural hollow sections of non-alloy and fine grain steels – part1: Technical delivert conditions
	BS EN10219-2	Cold formed welded structural hollow sections of non-alloy and fine grain steels – part2: tolerances dimmsions and sectional properties
Line Pipe	GB/T 9711.1	Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)
	GB/T 9711.2	Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class B steel pipe)
	PSL1/2	Line pipe
Casing	API 5CT/ ISO 11960 PSL1	Steel pipe for use as casing or tubing for wells of petroleum and natural gas industries

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Product Name	LSAW Steel Pipe
Usage	Used for low pressure liquid delivery, such as water, gas, and oil.
Process	LSAW – UO(UOE),RB(RBE),JCO(JCOE)DSAW -Double Submerged arc welded
Standard	API 5L, API 5CT, ASTM 53, EN10217, DIN 2458. IS 3589, GB/T3091, GB/T9711
Certificate	API 5L PSL1 / PSL2, API 5CT
Out Diameter	355.6mm– 1828.8mm
Wall Thickness	8 -50mm
Length	up to 12m
Steel Grade
API 5L PSL1 / PSL2	GR B, X42, X46, X52, X56, X60, X65, X70, X80
ASTM A53	GR A, GR B, GR C
EN	S275, S275JR, S355JRH, S355J2H
GB	Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360- L555
Surface	Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement
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
MOQ	5 TONS

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Packing & Delivery

Shipping By Sea

1. Standard packaging
2. Packaging according to customer requirements