API 5L SSAW Steel Pipe for Oil and Gas Pipeline

API 5L SSAW steel pipes are spiral welded pipes designed to meet the American Petroleum Institute’s (API) specification 5L. This standard defines requirements for line pipes used in the transportation of oil, gas, and water across long distances. SSAW refers to the spiral submerged arc welding process, where a steel coil is helically wound into a pipe and then welded both internally and externally using submerged arc welding technology.Unlike seamless or straight seam pipes, SSAW pipes can be manufactured in large diameters and long lengths at a relatively low cost, making them ideal for projects requiring extensive coverage and large pipe sizes.

The commonly used standards for spiral steel pipes are generally divided into: SY/T5037-2008 (departmental standard, also called spiral seam submerged arc welded steel pipe for ordinary fluid transportation pipelines), GB/T9711.1-2008 (national standard, also called technical conditions for delivery of steel pipes for petroleum and natural gas industry transportation, Part 1: Grade A steel pipe (strict requirements include GB/T9711.2 Grade B steel pipe)), API-5L (American Petroleum Institute, also called pipeline steel pipe; it is divided into two levels, PSL1 and PSL2), SY/T5040-2008 (spiral welded steel pipe for piles).

API 5L SSAW Pipe Specification and PSL Grades

Standard	Grade	Chemical Composition(%)				Tensile STrength(min)	Yield Strength(min)
		cMnPS				Mpa	Mpa
API 5L PSL1	A	0.22	0.90	0.030	0.030	335	210
	B	0.28	1.20	0.030	0.030	415	245
	X42	0.28	1.30	0.030	0.030	415	290
	X46	0.28	1.40	0.030	0.030	435	320
	X52	0.28	1. 40	0.030	0.030	460	360
	X56	0.28	1.40	0.030	0.030	490	390
	X60	0.28	1.40	0.030	0.030	520	415
	X65	0.28	1.40	0.030	0.030	535	450
	X70	0.28	1.40	0.030	0.030	570	485
Standard	Grade	Chemical Composition(%)				Tensile STrength	Yield Strength
		cMnPS				Mpa	Mpa
API 5L PSL2	B	0.24	1.20	0.025	0.015	415-655	245-450
	X42	0.24	1.30	0.025	0.015	415-655	290-495
	X46	0.24	1.40	0.025	0.015	435-655	320-525
	X52	0.24	1. 40	0.025	0.015	460-760	360-530
	X56	0.24	1. 40	0.025	0.015	490-760	390-545
	X60	0.24	1. 40	0.025	0.015	520-760	415-565
	X65	0.24	1.40	0.025	0.015	535-760	450-600
	X70	0.24	1.40	0.025	0.015	570-760	485-635
	X80	0.24	1. 40	0.025	0.015	625-825	555-705

Advantages of API 5L SSAW Pipes

1.Wide Diameter Range

SSAW pipes can be manufactured in diameters exceeding 3000 mm, which is difficult with other pipe types.

2.Cost Efficiency

Lower production costs compared to seamless or LSAW pipes, especially in large sizes.

3.Good Weld Strength

Double-sided submerged arc welding ensures consistent, high-strength welds.

4.Custom Length and Coating Options

Easily adapted to project-specific needs with custom lengths, beveling, and anti-corrosion coatings.

5.High Throughput and Productivity

Spiral welding allows continuous production, increasing efficiency in large-scale projects.

Applications in Oil and Gas Pipelines

API 5L SSAW steel pipes are widely used in:
Crude oil and natural gas transmission
Offshore and onshore pipeline systems
Petrochemical pipeline networks
High-volume water injection lines
Cross-country trunk pipelines

Their excellent weldability, flexibility in size, and robustness make them suitable for both buried and above-ground pipeline installations in varied terrains, including deserts, mountains, wetlands, and offshore zones.

API 5L SSAW Steel Pipe Manufacturers and Suppliers

Choose Baowi Steel as your reliable supplier of API 5L SSAW steel pipes. We are fully certified with the API Monogram and ISO standards and bring years of experience in manufacturing and exporting high-quality pipeline products. Our factory is equipped with complete in-house testing facilities including ultrasonic testing hydrostatic testing and full chemical and mechanical analysis. We offer custom services such as pipe coating beveling and length cutting to meet your exact project requirements. With strong production capacity and global shipping support Baowi Steel ensures consistent quality and on time delivery for every order.