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    Pipeline Steel

    Pipeline steel plate is mainly used for manufacturing steel pipes for transporting crude oil, refined oil, natural gas and other fluid or gases. Key pipeline steel products developed by us and batch supplied include: ordinary buried pipeline steel, hot bending pipe, submarine pipeline steel, sour service pipeline steel, anti-large deformation pipeline steel and so on.

    1. Detailed information

     Grade and Size
    (1)Grade and Size

    Standard

    Grade

    Delivery State

    Size

    (T*W*L)(mm)

    API 5L, ISO3183, DNV, GB/T9711, or technical agreement

    Plate

    B(L245, BM, L245M, 245MB)~

    X56(L390, X56M,L390M, L360MB)

    TMCP

    6-30*1600-3200

    *6000-18000

    X60(L415, X60M, L415M, L415MB)~

    X70(L485, X70M, L485M, L485MB)

    TMCP

    6-28.6*1600-3200

    *6000-18000

    X80(X80M, L555M, X90 (X90M, L625M)

    TMCP

    6-20*1600-3200

    Submarine pipeline BMO(L245MO)~

    X80MO(L555MO)

    TMCP

    6-31.2*1600-3200

    Acid-resistance pipeline BMS(L245MS)~X65MS(L450MS)

    TMCP

    6-26*1600-3200

    anti-large deformation pipeline X70HD, X80HD

    TMCP

    6-28.6*1600-3200

    BN(L245NB)X52N(L360N)

    N

    6-25*1600-3200

    BQ(L245Q)X70Q(L485Q)

    Q

    6-25*1600-3200

    Coil

    B(L245, BM, L245M, L245MB)~

    X70(L485, X70M, L485M, L485MB)

    TMCP

    6-20

    *1600-2500*L

    X80(X80M, L555M)

    TMCP

    6-18.4

    (2)Chemical Composition
    Typical Pipeline Steel Composition Range wt % (Max)

    Grade

    C≤

    Mn≤

    P≤

    S≤

    Si≤

    Nb≤

    Mo≤

    Cr≤

    Ni≤

    V≤

    Ti≤

    X65

    0.09

    1.60

    0.020

    0.008

    0.35

    0.06

    0.30

    0.25

    0.30

    0.06

    0.025

    X70

    0.09

    1.65

    0.020

    0.005

    0.35

    0.08

    0.30

    0.30

    0.30

    0.06

    0.025

    X80

    0.09

    1.85

    0.018

    0.005

    0.35

    0.10

    0.35

    0.40

    0.40

    0.06

    0.025

    X65MS

    0.08

    1.45

    0.015

    0.002

    0.35

    0.06

    0.10

    0.30

    0.30

    0.06

    0.025

    X65MO

    0.10

    1.65

    0.018

    0.003

    0.35

    0.06

    0.30

    0.30

    0.30

    0..06

    0.025

    X70HD

    0.09

    1.65

    0.018

    0.005

    0.35

    0.10

    0.30

    0.30

    0.30

    0.06

    0.025

    (3)Mechanical Property
    Typical Pipeline Steel Mechanical Property

    Grade

    Rt0.5 Mpa

    Rm Mpa

    Yield Ratio

    Rt0.5/Rm

    Impact

    (-20, J)

    HV10

    Min

    Max

    Min

    Max

    X65

    460

    600

    535

    740

    ≤0.90

    ≥180

    ≤235

    X70

    500

    620

    570

    740

    ≤0.90

    ≥220

    ≤255

    X80

    560

    705

    625

    825

    ≤0.92

    ≥220

    ≤260

    X65MS

    460

    600

    535

    740

    ≤0.92

    ≥180

    ≤230

    X65MO

    460

    580

    535

    740

    ≤0.90

    ≥180

    ≤235

    X70HD

    490

    610

    570

    740

    ≤0.85

    ≥180

    ≤255

    Note: steel plate drop weight test result, grain size, inclusion, banded structure and other indicators conform to the requirements of the standard or customer technical requirements, all composition, properties, etc. can meet the requirements of technical agreement.


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