Name: API Spec 5L Steel Pipe
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API Spec 5L Steel Pipe

API Spec 5L is an international standard that specifies the manufacturing requirements for two product specification grades (PSL 1 and PSL 2) of seamless and welded steel pipes used in pipeline transportation systems in the oil and gas industry.

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product description

API Spec 5L Steel Pipe Description

API-5L welded spiral steel pipe is made of hot-rolled strip or steel plate as raw material. The strip or steel plate is rolled into a round or special-shaped steel pipe by a forming machine, and then the formed steel pipe is butt welded by a high-frequency welding unit. PSL1 and PSL2 pipelines have different levels of quality requirements. This kind of steel pipe has the advantages of high strength, high toughness, corrosion resistance, and easy welding. API Spec 5L steel pipes are commonly used to manufacture pipeline steel pipes in the oil and gas industry.

Product Parameters

Product Name	API Spec 5L Steel Pipe
Standard	EN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer Diameter	Seamless: 1/4"-36"	Welding: 21.3mm-3620mm
	Round Tube: 1/2"-10"	Square Tube/Rectangular Tube: 15x15mm-400x600mm
Wall Thickness	Seamless: 1.25mm-50mm	Welding: 1.65mm-65mm
Length	3-12 meters, Support customization
Surface Process	Bright, Polished, Black
Other Services	Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

Chemical Composition

API Spec 5L PSL 1	Brand	C	Mn	P	S
	B	≤ 0.28	≤ 1.20	≤ 0.030	≤ 0.030
	X42	≤ 0.28	≤ 1.30	≤ 0.030	≤ 0.030
	X46	≤ 0.28	≤ 1.40	≤ 0.030	≤ 0.030
	X52	≤ 0.28	≤ 1.40	≤ 0.030	≤ 0.030
API Spec 5L PSL 2	B	≤ 0.24	≤ 1.20	≤ 0.025	≤ 0.015
	X42	≤ 0.24	≤ 1.30	≤ 0.025	≤ 0.015
	X46	≤ 0.24	≤ 1.40	≤ 0.025	≤ 0.015
	X52	≤ 0.24	≤ 1.40	≤ 0.025	≤ 0.015

Mechanical Properties

Standard	Brand	Yield Strength (MPa)	Tensile Strength (MPa)
API Spec 5L PSL 1	A25	172	310
	A	207	331
	B	241	414
	X42	290	414
	X46	317	434
	X52	359	455
	X56	386	490
	X60	414	517
	X65	448	531
	X70	483	565
API Spec 5L PSL 2	B	290-496	414-758
	X42	317-524	434-758
	X46	359-531	455-758
	X52	386-544	490-758
	X56	414-565	517-758
	X60	448-600	531-758
	X65	483-621	565-758
	X70	552-690	621-827

Scope of Application

API Spec 5L specifies the manufacture of two product levels (PSL1 and PSL2). PSL refers to the product specification level established for the API 5L standard. Piping specification classes are classified into PSL1 and PSL2. For pipeline standards, PSL1 and PSL2 pipelines have different levels of quality requirements. API Spec 5L pipeline steel plate is used to manufacture pipeline steel pipes that extract oil, steam, and water on the ground in the oil and gas industry.

Materials No.	European Standard EN 10208-2	German Standard DIN 17172	API 5L
1.0457	L 245NB	StE 240.7	Gr.B
1.0484	L 290NB	StE 290.7	X42
1.0582	L 360NB	StE 360.7	X52
1.8972	L 415NB	StE 415.7	X60
1.0418	L 245MB	StE 240.7 TM	Gr.B
1.0429	L 290MB	StE 290.7 TM	X42
1.0578	L 360MB	StE 360.7 TM	X52
1.8973	L 415MB	StE 415.7 TM	X60
1.8975	L 450MB	StE 445.7 TM	X65
1.8977	L 485MB	StE 480.7 TM	X70

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FAQ

Q1: Are you a manufacturer or a trading company?
A: We are a professional metal products manufacturer based in Shandong, China, with our own production facilities and a strong supply chain. We specialize in carbon steel and stainless steel products, with over 100,000 tons of stock available year-round.

Q2: Where is your company located? Can I visit your factory?
A: Our company is located in Shandong, China. We welcome customers and partners from all over the world to visit our facilities. Please contact us in advance to arrange a visit.

Q3: What products does your company mainly supply?
A: We mainly supply carbon steel and stainless steel products in various forms, including plates, pipes, coils, bars, structural steel (H-beam, channel steel, angle steel), and customized metal components. We cover a full range of specifications to meet diverse customer needs.

Q4: Do you support OEM or customized orders?
A: Yes. We have years of experience in product customization. We can produce according to your drawings, samples, or specific technical requirements. Please contact us with your customization needs.

Q5: What material grades do you offer?
A: For carbon steel, we offer grades such as A36, S235JR, Q235, Q345, and more. For stainless steel, we offer 304, 304L, 316, 316L, 201, 430, and other common grades. Custom grades are available upon request.

Q6: How do you guarantee product quality?
A: Our factory operates under strict QA/QC standards. Every product is inspected during production and before shipment to ensure it meets agreed quality specifications. We can provide mill test certificates and accept thirdparty inspections upon request.