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Advanced API Spec 5L Steel Pipe

API Spec 5L is a global standard that outlines the manufacturing criteria for two product specification grades (PSL 1 and PSL 2) of seamless and welded steel pipes utilized in pipeline transportation systems within the oil and gas industry.


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    API Spec 5L Steel Pipe description

    The API-5L welded spiral steel pipe is produced using hot-rolled strip or steel plate as the raw material. The strip or steel plate is shaped into a round or special-shaped steel pipe by a forming machine, followed by butt welding of the formed steel pipe using a high-frequency welding unit. PSL1 and PSL2 pipelines entail varying levels of quality requirements. This type of steel pipe offers advantages such as high strength, toughness, corrosion resistance, and ease of welding. API Spec 5L steel pipes are widely utilized in the manufacturing of pipeline steel pipes within 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 PSL1 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 PSL2 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 PSL1 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 PSL2 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 You are 240.7 Gr.B
    1.0484 L 290NB You are 290.7 X42
    1.0582 L 360NB StE 360.7 X52
    1.8972 L 415NB You are 415.7 X60
    1.0418 L 245MB You are 240.7 TM Gr.B
    1.0429 L 290MB You are 290.7 TM X42
    1.0578 L 360MB You are 360.7 TM X52
    1.8973 L 415MB You are 415.7 TM X60
    1.8975 L 450MB You are 445.7 TM X65
    1.8977 L 485MB You are 480.7 TM X70
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