Carbon Steel LSAW Pipe

Short Description:

Type: Carbon Steel LSAW Pipe, Longitudinal Submerged Arc Welding Steel Pipe, LSAW Steel Pipe
Spec.: OD:406mm-1422mm, WT:6-60mm. LENGTH: 5mtr ~ 12mtr
Standard: API 5L, GB/T9711, EN10208, IS03183 , ASTM A691, ASTM A671/A672, ASTM A252, AS1163, etc
Grade: A/ B, X42-X80, L210-L255, PSL1&PSL2
Ends: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
Coating: Zinc/Anti-corrosive Coating
Packing: Bundled/In Bulk, Plastic Caps Plugged, Waterproof Paper Wrapped

Send email to us

Product Detail

Manufacturing Process

Application

Product Tags

Details of Carbon Steel LSAW Pipe

What is the Carbon Steel LSAW Pipe?

Carbon Steel LSAW Pipe is a high-strength, large-diameter pipe manufactured by bending a steel plate and welding its edges along its length using a highly reliable automated process. It is the go-to choice for the most demanding and critical pipeline projects worldwide.

Carbon Steel LSAW Pipes are defined by a unique combination of robustness, reliability, and economic viability for large-scale infrastructure. Their primary characteristics include large diameters and substantial wall thicknesses, enabling high-pressure capacity and exceptional mechanical strength. The defining feature is the longitudinal submerged arc weld, which produces a superior, high-integrity seam renowned for its deep penetration and reliability. Further enhanced by excellent dimensional accuracy from cold expansion, these pipes offer a structurally sound and cost-effective solution, making them the indispensable backbone for critical long-distance transmission of oil, gas, and water, as well as for demanding structural applications like piling and marine works.

Product Specification and Size of Carbon Steel LSAW Pipe

Available Specification of Carbon Steel LSAW Pipe

Chemical Composition of Carbon Steel LSAW Pipe

Tolerance of Outside Diameter and Wall Thickness

Types	Standard
Types	SY/T5040-2000	SY/T5037-2000	SY/T9711.1-1977	ASTM A252	AWWA C200-97	API 5L PSL1
Tube end OD deviation	±0.5%D	±0.5%D	-0.79mm～+2.38mm	<±0.1%T	<±0.1%T	±1.6mm
Wall thickness	±10.0%T	D<508mm, ±12.5%T	-8%T～+19.5%T	<-12.5%T	-8%T～+19.5%T	5.0mm<T<15.0mm, ±0.11
Wall thickness	±10.0%T	D>508mm, ±10.0%T	-8%T～+19.5%T	<-12.5%T	-8%T～+19.5%T	T≥15.0mm, ±1.5mm

Chemical Composition and Mechanical Properties

Standard	Grade	Chemical Composition(max)%					Mechanical Properties(min)
Standard	Grade	C	Mn	Si	S	P	Yield Strength(Mpa)	Tensile Strength(Mpa)
GB/T700-2006	A	0.22	1.4	0.35	0.050	0.045	235	370
	B	0.2	1.4	0.35	0.045	0.045	235	370
	C	0.17	1.4	0.35	0.040	0.040	235	370
	D	0.17	1.4	0.35	0.035	0.035	235	370
GB/T1591-2009	A	0.2	1.7	0.5	0.035	0.035	345	470
	B	0.2	1.7	0.5	0.030	0.030	345	470
	C	0.2	1.7	0.5	0.030	0.030	345	470
BS En10025	S235JR	0.17	1.4	-	0.035	0.035	235	360
	S275JR	0.21	1.5	-	0.035	0.035	275	410
	S355JR	0.24	1.6	-	0.035	0.035	355	470
DIN 17100	ST37-2	0.2	-	-	0.050	0.050	225	340
	ST44-2	0.21	-	-	0.050	0.050	265	410
	ST52-3	0.2	1.6	0.55	0.040	0.040	345	490
JIS G3101	SS400	-	-	-	0.050	0.050	235	400
JIS G3101	SS490	-	-	-	0.050	0.050	275	490
API 5L PSL1	A	0.22	0.9	-	0.03	0.03	210	335
	B	0.26	1.2	-	0.03	0.03	245	415
	X42	0.26	1.3	-	0.03	0.03	290	415
	X46	0.26	1.4	-	0.03	0.03	320	435
	X52	0.26	1.4	-	0.03	0.03	360	460
	X56	0.26	1.1	-	0.03	0.03	390	490
	X60	0.26	1.4	-	0.03	0.03	415	520
	X65	0.26	1.45	-	0.03	0.03	450	535
	X70	0.26	1.65	-	0.03	0.03	585	570

Previous: Stainless Steel Plate

Next: Carbon Steel SSAW Pipe

Manufacturing Process of Carbon Steel Welded Pipe

carbon_steel_welded_pipe_manufacturing_process1

carbon_steel_welded_pipe_manufacturing_process2

Application of Carbon Steel LSAW Pipe

Due to their strength and ability to be made in large sizes, Carbon Steel LSAW Pipes are the backbone of major industrial infrastructure:

Oil and Gas Transmission Pipelines: Mainlines for transporting crude oil and natural gas over long distances.
Water Transmission Mains: Large pipelines for municipal water supply.
Piling: Used as foundational support for large structures like bridges, buildings, and ports.
Structural Applications: Columns and supports in heavy industrial construction.
Ocean Outfalls: Pipelines that carry treated wastewater out to sea.

carbon steel LSAW pipe