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.

Classification of LSAW Steel Pipe:

According to different molding methods, LSAW Steel Pipe can be divided into:
1. 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.

2. JCOE steel pipe: according to “J-C-O-E” pre-welding, forming, cold expansion after welding and other processes

3. HME steel pipe: formed by the mandrel rolling method according to “C-C-O”, cold expansion after welding and other processes.

Features of LSAW Steel Pipe:

1) The LSAW 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 LSAW 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) LSAW Steel Pipe employs pre-welding and precision welding processes, resulting in a stable welding process and high weld quality.

4) LSAW Steel Pipe welds are easily inspected non-destructively during production and can be re-inspected on-site during use.

5) The range of product specifications is wide, and LSAW Steel Pipe can produce steel pipes with small diameter and large wall thickness as well as large diameter and large wall thickness.

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, SSAW steel pipe, ERW steel pipe, etc.

Specifications of Welded Steel Pipe:

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

Standard	Grade	Chemical Composition(max)%					Mechanical Properties(min)
Standard	Grade	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
ASTM A53	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
EN10217-5	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