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API SPEC 5CT oil pipe flat end 48.26 × 3.68 NU

It can be divided into seamless steel pipes and welded steel pipes. Large diameter petroleum casings are generally submerged arc welded straight seam steel pipes. Mainly used for transporting liquids and gases such as oil, natural gas, coal gas, water, etc. The main application countries of this product are mainly distributed in the Middle East, Europe and America.

  • 产品描述

  • It can be divided into seamless steel pipes and welded steel pipes. Large diameter petroleum casings are generally submerged arc welded straight seam steel pipes. Mainly used for transporting liquids and gases such as oil, natural gas, coal gas, water, etc. The main application countries of this product are mainly distributed in the Middle East, Europe and America.

    Description: Oil pipe

    Standards: API SPEC 5CT, API SPEC 5B, ISO 11960

    Usage: Tubing is used for extracting oil or natural gas from oil wells.

    Oil pipe specifications:

     

    Size Code  Weight code Outer diameter Wall thickness End processing form
    Steel grade
    Not thickened Extra thickness in mm in mm J55 L80-1 N80 C90 T95 P110
    1.900" 2.40 - 1.900 48.26 0.125 3.18 PI - - - - -
    2.75 2.90 1.900 48.26 0.145 3.68 PNUI PNUI PNUI PNUI PNUI -
    3.65 - 1.900 48.26 0.200 5.08 PU PU PU PU PU PU
    2 3/8" 4.00 - 2.375 60.32 0.167 4.24 PN PN PN PN PN -
    4.00 4.70 2.375 60.32 0.190 4.83 PNU PNU PNU PNU PNU -
    5.80 5.95 2.375 60.32 0.254 6.45 - PNU PNU PNU PNU PNU
    6.60 - 2.375 60.32 0.259 7.49 - P - P P PNU
    7.35 7.45 2.375 60.32 0.336 8.53 - PU - PU PU -
    2 7/8" 6.40 6.50 2.875 73.02 0.217 5.51 PNU PNU PNU PNU PNU -
    7.80 7.90 2.875 73.02 0.276 7.01 - PNU PNU PNU PNU PNU
    8.60 8.70 2.875 73.02 0.308 7.82 - PNU PNU PNU PNU PNU
    9.35 9.45 2.875 73.02 0.340 8.64 - PU - PU PU PNU
    10.50 - 2.875 73.02 0.392 9.96 - P - P P -
    11.50 - 2.875 73.02 0.440 11.18 - P - P P -
    3 1/2" 7.70 - 3.500 88.90 0.216 5.49 PN PN PN PN PN -
    9.20 9.30 3.500 88.90 0.254 6.54 PNU PNU PNU PNU PNU -
    10.20 - 3.500 88.90 0.289 7.34 PN PN PN PN PN PNU
    12.70 12.95 3.500 88.90 0.375 9.52 - PNU PNU PNU PNU -
    14.30 - 3.500 88.90 0.430 10.92 - P - P P PNU
    15.50 - 3.500 88.90 0.476 12.00 - P - P P -
    17.00 - 3.500 88.90 0.530 13.46 - P - P P -
    4" 9.50 - 4.000 101.60 0.226 5.74 PN PN PN PN PN -
    10.70 11.00 4.000 101.60 0.262 6.65 PU PU PU PU PU -
    4 1/2" 12.60 12.75 4.500 114.30 0.271 6.88 PNU PNU PNU PNU PNU -
    15.20 - 4.500 114.30 0.337 8.56 - P - P P -
    17.00 - 4.500 114.30 0.380 9.65 - P - P P -
    18.90 - 4.500 114.30 0.430 10.92 - P - P P -
    21.50 - 4.500 114.30 0.500 12.70 - P - P P -
    23.70 - 4.500 114.30 0.560 14.22   P   P P -
    26.10 - 4.500 114.30 0.630 16.00 - P - P P -

    Note: P - Flat head; N - No thickening; U - external thickness; T&C - Car thread with coupling; I - integral joint. 

    Mechanical properties:

    Standard Brand Tensile strength（MPa） Yield strength（MPa） Elongation（％） Hardness
    API SPEC 5CT J55 ≥517 379～552 Table lookup
     
    K55 ≥517 ≥655
     
    N80 ≥689 552～758
     
    L80(13Cr) ≥655 552～655 ≤241HB
    P110 ≥862 758～965
     

     

    Chemical composition:

     

    Standard Brand Chemical composition（％）
    C Si Mn P S Cr Ni Cu Mo V Als
    API SPEC 5CT J55K55 (37Mn5) 0.34～0.39 0.20～0.35 1.25～1.50 ≤0.020 ≤0.015 ≤0.15 ≤0.20 ≤0.20 / / ≤0.020
    N80 (36 Mn2V) 0.34～0.38 0.20～0.35 1.45～1.70 ≤0.020 ≤0.015 ≤0.15 / / / 0.11～0.16 ≤0.020
    L80(13Cr) 0.15～0.22 ≤1.00 0.25～1.00 ≤0.020 ≤0.010 12.0～14.0 ≤0.20 ≤0.20 / / ≤0.020
    P110 (30CrMo) 0.26～0.35 0.17～0.37 0.40～0.70 ≤0.020 ≤0.010 0.80～1.10 ≤0.20 ≤0.20 0.15～0.25 ≤0.08 ≤0.020

     

    Outer diameter, thickness, weight deviation

     

    Dimensional deviation
    Project Allowable deviation
    External diameter Tube body D≤101.60mm±0.79mm
    D≥114.30mm +1.0%
    -0.5%
    Wall thickness -12.5%
    Weight Single root +6.5%
    +3.5%
    Vehicle volume -1.75

     

    Length range

     

    Length
    Project Scope 1 Scope 2 Scope 3
    Oil pipe 6.10-7.32m 8.53-9.75m -
    Bushing 4.88-7.62m 7.62-10.36m 10.36-14.63m

     

      

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