SHINESTAR STEEL GROUP CO., LTD

盛仕达钢铁股份有限公司

Coupling

Short Description:


  • Keywords: Seamless ,SMLS, Electric Resistance Welded ,ERW,Drill Pipe,oil pipe;Coupling
  • Size: Tubing Coupling: 33.35mm * 80.96mm ~ 141.30mm * 158.75mm Casing Coupling: 127mm * 158.75mm ~ 553.4mm * 269.88mm
  • Standard & Grade: API 5CT / 5B;J 55, K 55, N 80-1, N80 Q, C 90, C 95, T 95, P 110, Q 125
  • Thread: NUE, EUE, VAM, STC, LTC, BTC, Special Clearance, XC, VAM TOP, NEW VAM
  • Delivery: Within 30 days and Depends on your order quantity
  • Payment: TT, LC , OA , D/P
  • Packing: Protection Caps in Both End, Waterproof Paper Wrapped, Two Tags
  • Usage: Used for Connecting two joints of Oil Tubing / Casing
  • Product Detail

    Specification

    Standard

    Painting & Coating

    Packing & Loading

    Couplings are short lengths of pipe used to connect 2 joints of tubing or casing. They come with painted color codes on their external surface to indicate their grades. Standard:API Spec 5CT and 5B Tread types: NUE, EUE, VAM, STC, LTC, BTC, special clearance, XC,VAM TOP,NEW VAM.

    Oil and Gas Couplings are short lengths of pipe used to connect 2 joints of tubing or casing. They come with painted color codes on their external surface to indicate their grades.

    oil casing couplings and oil tubing couplings have different thread types.

    Standards and Technical Conditions for Supply:API Spec 5CT and 5B

    Size: 1.9–20

    Grade: J55,K55,N80-1,N80Q,L80-1,C90,C95,T95,P110,Q125

    Thread types of couplings: NUE, EUE, VAM, STC, LTC, BTC, special clearance, XC,VAM TOP,NEW VAM.

    Packing: by carton, wooden case, wooden pallet or customized


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  • Size and Specifications For Tubing and Casing Couplings for oil and gas

    Descriptions and size

    Type of Therad

    O.D*L

    Weight

    Descriptions and size

    Type of Therad

    O.D*L

    Weight

    (mm)

    (kg)

    (mm)

    (kg)

    Casing

    Coupling

    4-1/2″

    STC

    127.00*158.75

    5.23

    Tubing

    Coupling

    1.05

    NUE

    33.35*80.96

    0.23

    4-1/2″

    LTC

    127.00*177.80

    4.15

    1.05

    EUE

    42.16*82.55

    0.38

    4-1/2″

    BTC

    127.00*225.42

    4.55

    1.315

    NUE

    42.16*82.55

    0.38

    5″

    STC

    141.30*165.10

    4.66

    1.315

    EUE

    48.26*88.90

    0.57

    5″

    LTC

    141.30*196.85

    5.75

    1.66

    NUE

    52.17*88.90

    0.59

    5″

    BTC

    141.30*231.78

    5.85

    1.66

    EUE

    58.88*95.25

    0.68

    5-1/2″

    STC

    153.67*171.45

    5.23

    1.9

    NUE

    55.88*95.25

    0.56

    5-1/2″

    LTC

    153.67*203.20

    6.42

    1.9

    EUE

    63.50*98.42

    0.84

    5-1/2″

    BTC

    153.67*234.95

    6.36

    2-3/8″

    NUE

    73.02*107.95

    1.28

    6-5/8″

    STC

    187.71*184.15

    9.12

    2-3/8″

    EUE

    77.80*132.82

    1.55

    6-5/8″

    LTC

    187.71*222.25

    11.34

    2-7/8″

    NUE

    88.90*130.18

    2.34

    6-5/8″

    BTC

    187.71*244.48

    11.01

    2-7/8″

    EUE

    93.17*133.35

    2.4

    7″

    STC

    194.46*184.15

    8.39

    3-1/2″

    NUE

    107.95*142.88

    3.71

    7″

    LTC

    194.46*228.60

    10.83

    3-1/2″

    EUE

    114.30*146.05

    4.1

    7″

    BTC

    194.46*254.00

    10.54

    4″

    NUE

    120.65*146.05

    4.35

    7-5/8″

    STC

    215.90*190.50

    12.3

    4″

    EUE

    127.00*152.40

    4.82

    7-5/8″

    LTC

    215.90*234.95

    15.63

    4-1/2″

    NUE

    132.08*155.58

    4.89

    7-5/8″

    BTC

    215.90*263.52

    15.82

    4-1/2″

    EUE

    141.30*158.75

    6.05

    8-5/8″

    STC

    244.48*196.85

    16.23

    8-5/8″

    LTC

    244.48*254.00

    21.67

    8-5/8″

    BTC

    244.48*269.88

    20.86

    9-5/8″

    STC

    269.88*196.85

    18.03

    9-5/8″

    LTC

    269.88*266.70

    25.45

    9-5/8″

    BTC

    269.88*269.88

    23.16

    10-3/4″

    STC

    298.45*203.20

    20.78

    10-3/4″

    BTC

    298.45*269.88

    25.74

    11-3/4′

    STC

    323.85*203.20

    22.64

    11-3/4′

    BTC

    323.85*269.88

    28.03

    13-3/8″

    STC

    365.12*203.20

    25.66

    13-3/8″

    BTC

    365.12*269.88

    31.77

    16″

    STC

    431.80*228.6

    34.91

    16″

    BTC

    431.80*269.88

    40.28

    18-5/8″

    STC

    508.00*228.60

    51.01

    18-5/8″

    BTC

    508.00*269.88

    62.68

    20″

    STC

    533.40*228.6

    43.42

    20″

    LTC

    533.4*292.10

    57.04

    20″

    BTC

    533.40*269.88

    50.1

    API 5CT – Specification for Casing and Tubing 

    Spec 5CT specifies the technical delivery conditions for steel pipes (casing, tubing, plain end casing liners, and pup joints) and accessories.

    Applicable to the following connections in accordance

    (1)short round thread casing (STC);

    (2)long round thread casing (LC);
    (3)buttress thread casing (BC);
    (4)extreme-line casing (XC);
    (5)non-upset tubing (NU);
    (6)external upset tubing (EU);
    (7)integral joint tubing (IJ).

    This standard specifies the technical delivery conditions for steel pipes (casing, tubing, and pup joints), coupling stock, coupling material, and accessory material and establishes requirements for three Product Specification Levels (PSL-1, PSL-2, PSL-3). The requirements for PSL-1 are the basis of this standard. The requirements that define different levels of standard technical requirements for PSL-2 and PSL-3, for all grades except H-40, L-80 9Cr, and C110, are contained in Annex H. This standard can also be applied to tubulars with connections not covered by API standards,Not applicable to threading requirements.

    API 5B-Specification for Threading, Gauging, and Thread Inspection of Casing, Tubing, and Line Pipe Threads

    API 5B is the standard specification for threading, gauging, and inspection of Casing, Tubing and line pipe threads.

    Spec 5B covers dimensions and marking requirements for API Master thread gauges. Additional product threads and thread gauges, as well as instruments and methods for the inspection of threads for line pipe, round thread casing, buttress casing, and extreme-line casing connections, are included. It is applicable when so stipulated in the API standard governing the product. The inspection procedures for measurements of taper, lead, height, and angle of thread are applicable to threads having 111/2 or less turns per in. (111/2 or less turns per 25.4 mm). All thread dimensions shown without tolerances are related to the basis for connection design and are not subject to measurement to determine acceptance or rejection of product.

    Chemical Composition(%)

    Grade C Mn Mo Cr Ni Cu P S Si
    H40             ≤0.03 ≤0.03
    J55/K55             ≤0.03 ≤0.03
    N80-1/N80Q             ≤0.03 ≤0.03
    R95 ≤0.45ᶜ ≤1.9         ≤0.03 ≤0.03
    L80 ≤0.43ᵃ ≤1.9         ≤0.03 ≤0.03
    L80-1 ≤0.15 0.30~0.60 0.90~1.10 8.00~10.0 ≤0.03 ≤0.03 ≤0.45
    L80-13Cr 0.15~0.22 0.25~1.00   12.0~14.0 ≤0.25 ≤0.35 ≤0.03 ≤0.03 ≤0.45
    C90 ≤0.35 ≤1.20 0.25ᵇ~0.85 ≤1.50 ≤0.5 ≤0.25 ≤0.02 ≤0.01 ≤1
    T95 ≤0.35 ≤1.20 0.25ᵇ~0.85 0.40~1.50 ≤0.5 ≤0.25 ≤0.02 ≤0.01 ≤1
    C110 ≤0.35 ≤1.20 0.25~1.00 0.40~0.15 ≤0.99 ≤0.02 ≤0.01
    P110         ≤0.99 ≤0.02 ≤0.01
    Q125 ≤0.35 1.35 ≤0.85 ≤1.50 ≤0.99 ≤0.02 ≤0.005

    Mechanical properties

    Grade Total elongation under load(%) Yield strength(Mpa) Tensile strength

    (Mpa)

    Hardness

    (HRC)

    Hardness

    (HBW)

    H40 0.5 276~552 414
    J55 0.5 379~552 517
    K55 0.5 379~552 655
    N80-1/N80Q 0.5/0.5 552~758/552~758 689/689
    R95 0.5 655 724
    L80 0.5 552 655 23.0 241
    L80-1/L80-9Cr 0.5 552 655 23.0 241
    L80-13Cr 0.5 552 655 23.0 241
    C90 0.5 621 689 25.4 255
    T95 0.5 655 724 25.4 255
    C110 0.7 758 793 30.0 286
    P110 0.6 758 862
    Q125 0.65 862 931 b

    Coupling Pipe Grade Identification By Paint Color

        Coupling colour code
    Grade Grade Type Colour(s) for Coupling Number and

    colour of bands

    for product

    Picture
    Entire

    Coupling

    Band(s)
    H40 None Same as for pipe None/black band at the manufacturer’s option image
    J55 Tubing Bright Green None One Bright Green image
    J55 Casing Bright Green One White One Bright Green image
    K55 Bright Green None Two Bright Green image
    M65 M65Pipe uses L80Type 1

    Couplings

    One Bright Green

    One Blue

    image
    N80 1 Red None One Red image
    N80 Q Red One Green One Red

    One Bright Green

     image
    R95 Brown None One Brown image
    L80 1 Red One Brown One Red

    One Brown

    image
    L80 9Cr None Two Yellow One Red,

    One Brown,

    Two Yellow

      image
    L80 13Cr None One Yellow One Red,

    One Brown,

    One Yellow

    image
    C90 1 Purple None One Purple  image
    T95 1 Silver None One Silver image
    C110 White Two Brown One White,

    Two Brown

    image
    P110 White None One White image
    Q125 Orange None One Orange   image

    the packing of Coupling-01

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