SHINESTAR STEEL GROUP CO., LTD

盛仕达钢铁股份有限公司

API Casing

Short Description:


  • Keywords: API 5CT Casing, Well Casing, Seamless (SMLS), Electric Resistance Welded (ERW), Casing, Oil Pipe
  • Size: OD: 4 1/2’’ ~ 20’’ (114.3mm ~ 508mm);WT: 0.205’’ ~ 0.635’’ (5.21mm ~ 16.13mm);LENGTH: R1, R2, R3
  • Standard & Grade: API 5CT J 55/K55/N80/C75/L80/C90/T95/Q125
  • Ends: Beveled, Square Cut, With LTC/STC/BTC/VAM Connection
  • Packing: Protection Caps in Both Ends, Waterproof Paper Wrapped, Two Tags
  • Usage: Used as the Structural Retainer for the Walls of Oil, Gas Wells
  • Thread types: STC, LTC, BTC, Special Clearance, Premium Connection
  • Application: Oil Well Casing Serves As Well Sidewall
  • Product Detail

    Specification

    Standard

    Painting & Coating

    Packing & Loading

    Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore.It is inserted into a well bore and cemented in place to protect both subsurface formations and the well bore from collapsing and to allow drilling fluid to circulate and extraction to take place. Steel Casing Pipes have smooth wall & minimum yield strength of 35,000 psi.

    Well Casing serves as well sidewall. Standards and Technical Conditions for Supply:API Spec 5CT ISO13680 Grade: J55, K55, N80-1,N80-Q, L80-1, L80-9Cr,L80-13Cr,​C95, P110. Tread types: NUE, EUE, VAM, STC, LTC, BTC, special clearance, XC,VAM TOP,NEW VAM.

    Oil Casing Pipe: Casings are used for fixing the well wall or down hole, which have wide diameters, can be divided into conductor casings, technical casings and Oil casings.

    Uses: Well Casing serves as well sidewall.

    Standards and Technical Conditions for Supply: API Spec 5CT

    Grade of pipe casing: J55, K55, N80-1,N80-Q, L80-1, L80-9Cr,L80-13Cr,C95, P110.

    Tread types of pipe casing : STC, LTC, BTC, special clearance, XC,VAM TOP,NEW VAM.

    Dimension: OD: 114.3-508mm WT: 5.21-16.13mm

     

    What is API 5CT casing ?

    API SPEC 5CT well casing is utilized in fixing the well wall or down hole, which has wider diameters. API SPEC 5CT can be divided into conductor casing, technical casing and oil casing.

     

    API 5CT is standard technical specifications for steel casing pipes used for oil wells in petroleum and natural gas industries.

     

    Common Grades

    • J55/K55

    • N80/N80Q/L80

    • C90

    • R95/T95

    • P110/C110

    • Q125

     

    Connections

    API 5CT is applicable to following connections which complied with API SPEC 5B:

    • SC: Short round thread casing

    • LC: Long ound thread casing

    • BC: Buttress thread casing

    • NU: Non-upset tubing

    • EU: External upset tubing

    • IJ: Integral tubing connections


  • Previous:
  • Next:

  • Lengths:

     Oil Casing

    Range 1

    Range 2

    Range 3

    4.88~7.62

    7.62~10.36

    10.36~14.63

    Dimension:

    Labels

    Outside diameter  D

    Nominal linear mass T&C

    Wall thickness t

    J55

    N80

    L80

    C90

    P110

    Q125

    mm

    kg/m

    mm

    K55

    1/Q?

    T95

    1

    2

    3

    4

    5

    6

    7

    8

    9

    10

    11

    4 1/2

    9.5

    114.3

    14.14

    5.21

    PS

    -

    -

    -

    -

    -

    4 1/2

    10.5

    114.3

    15.63

    5.69

    PSB

    -

    -

    -

    -

    -

    4 1/2

    11.6

    114.3

    17.26

    6.35

    PSLB

    PLB

    PLB

    PLB

    PLB

    -

    4 1/2

    13.5

    114.3

    20.09

    7.37

    -

    PLB

    PLB

    PLB

    PLB

    -

    4 1/2

    15.1

    114.3

    22.47

    8.56

    -

    -

    -

    -

    PLB

    PLB

    5

    11.5

    127

    17.11

    5.59

    PS

    -

    -

    -

    -

    -

    5

    13

    127

    19.35

    6.43

    PSLB

    -

    -

    -

    -

    -

    5

    15

    127

    22.32

    7.52

    PSLBE

    PLBE

    PLBE

    PLBE

    PLBE

    -

    5

    18

    127

    26.79

    9.19

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    5

    21.4

    127

    31.85

    11.1

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    5

    23.2

    127

    34.53

    12.14

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    5

    24.1

    127

    35.86

    12.7

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    5 1/2

    14

    139.7

    20.83

    6.2

    PS

    -

    -

    -

    -

    -

    5 1/2

    15.5

    139.7

    23.07

    6.98

    PSLBE

    -

    -

    -

    -

    -

    5 1/2

    17

    139.7

    25.3

    7.72

    PSLBE

    PLBE

    PLBE

    PLBE

    PLBE

    -

    5 1/2

    20

    139.7

    29.76

    9.17

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    5 1/2

    23

    139.7

    34.23

    10.54

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    5 1/2

    26.8

    139.7

    39.88

    12.7

    -

    -

    -

    P

    -

    -

    5 1/2

    29.7

    139.7

    44.2

    14.27

    -

    -

    -

    P

    -

    -

    5 1/2

    32.6

    139.7

    48.51

    15.88

    -

    -

    -

    P

    -

    -

    5 1/2

    35.3

    139.7

    52.53

    17.45

    -

    -

    -

    P

    -

    -

    5 1/2

    38

    139.7

    56.55

    19.05

    -

    -

    -

    P

    -

    -

    5 1/2

    40.5

    139.7

    60.27

    20.62

    -

    -

    -

    P

    -

    -

    5 1/2

    43.1

    139.7

    64.14

    22.22

    -

    -

    -

    P

    -

    -

    6 5/8

    20

    168.28

    29.76

    7.32

    PSLB

    -

    -

    -

    -

    -

    6 5/8

    24

    168.28

    35.72

    8.94

    PSLBE

    PLBE

    PLBE

    PLBE

    PLBE

    -

    6 5/8

    28

    168.28

    41.67

    10.59

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    6 5/8

    32

    168.28

    47.62

    12.06

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    7

    17

    177.8

    25.3

    5.87

    -

    -

    -

    -

    -

    -

    7

    20

    177.8

    29.76

    6.91

    PS

    -

    -

    -

    -

    -

    7

    23

    177.8

    34.23

    8.05

    PSLBE

    PLBE

    PLBE

    PLBE

    -

    -

    7

    26

    177.8

    38.69

    9.19

    PSLBE

    PLBE

    PLBE

    PLBE

    PLBE

    -

    7

    29

    177.8

    43.16

    10.36

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    7

    32

    177.8

    47.62

    11.51

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    7

    35

    177.8

    52.09

    12.65

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    7

    38

    177.8

    56.55

    13.72

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    7

    42.7

    177.8

    63.54

    15.88

    -

    -

    -

    P

    -

    -

    7

    46.4

    177.8

    69.05

    17.45

    -

    -

    -

    P

    -

    -

    7

    50

    177.8

    74.56

    19.05

    -

    -

    -

    P

    -

    -

    7

    53.6

    177.8

    79.77

    20.62

    -

    -

    -

    P

    -

    -

    7

    57.1

    177.8

    84.97

    22.22

    -

    -

    -

    P

    -

    -

    7 5/8

    24

    193.68

    35.72

    7.62

    -

    -

    -

    -

    -

    -

    7 5/8

    26.4

    193.68

    39.29

    8.33

    PSLBE

    PLBE

    PLBE

    PLBE

    -

    -

    7 5/8

    29.7

    193.68

    44.2

    9.52

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    7 5/8

    33.7

    193.68

    50.15

    10.92

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    7 5/8

    39

    193.68

    58.04

    12.7

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    7 5/8

    42.8

    193.68

    63.69

    14.27

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    7 5/8

    45.3

    193.68

    67.41

    15.11

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    7 5/8

    47.1

    193.68

    70.09

    15.88

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    7 5/8

    51

    193.68

    76.19

    17.45

    -

    -

    -

    P

    -

    -

    7 5/8

    55.3

    193.68

    82.3

    19.05

    -

    -

    -

    P

    -

    -

    8 5/8

    24

    219.08

    35.72

    6.71

    PS

    -

    -

    -

    -

    -

    8 5/8

    28

    219.08

    41.67

    7.72

    -

    -

    -

    -

    -

    -

    8 5/8

    32

    219.08

    47.62

    8.94

    PSLBE

    -

    -

    -

    -

    -

    8 5/8

    36

    219.08

    53.57

    10.16

    PSLBE

    PLBE

    PLBE

    PLBE

    -

    -

    8 5/8

    40

    219.08

    59.53

    11.43

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    8 5/8

    44

    219.08

    65.48

    12.7

    -

    PLBE

    PLBE

    PLBE

    PLBE

     

    8 5/8

    49

    219.08

    72.92

    14.15

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    9 5/8

    32

    244.48

    48.07

    7.92

    -

    -

    -

    -

    -

    -

    9 5/8

    36

    244.48

    53.57

    8.94

    PSLB

    -

    -

    -

    -

    -

    9 5/8

    40

    244.48

    59.53

    10.03

    PSLBE

    PLBE

    PLBE

    PLBE

    -

    -

    9 5/8

    43.5

    244.48

    64.73

    11.05

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    9 5/8

    47

    244.48

    69.94

    11.99

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    9 5/8

    53.5

    244.48

    79.62

    13.84

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    9 5/8

    58.4

    244.48

    86.91

    15.11

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    9 5/8

    59

    244.48

    88.4

    15.47

    -

    -

    -

    P

    -

    -

    9 5/8

    64.9

    244.48

    96.58

    17.07

    -

    -

    -

    P

    -

    -

    9 5/8

    70.3

    244.48

    104.62

    18.64

    -

    -

    -

    P

    -

    -

    9 5/8

    75.6

    244.48

    112.5

    20.24

    -

    -

    -

    P

    -

    -

    10 3/4

    32.75

    273.05

    48.74

    7.09

    -

    -

    -

    -

    -

    -

    10 3/4

    40.5

    273.05

    60.27

    8.89

    PSB

    -

    -

    -

    -

    -

    10 3/4

    45.5

    273.05

    67.71

    10.16

    PSBE

    -

    -

    -

    -

    -

    10 3/4

    51

    273.05

    75.9

    11.43

    PSBE

    PSBE

    PSBE

    PSBE

    PSBE

    -

    10 3/4

    55

    273.05

    82.59

    12.57

    -

    PSBE

    PSBE

    PSBE

    PSBE

    -

    10 3/4

    60.7

    273.05

    90.33

    13.84

    -

    -

    -

    PSBE

    PSBE

    PSBE

    10 3/4

    65.7

    273.05

    97.77

    15.11

    -

    -

    -

    PSB

    PSB

    PSB

    10 3/4

    73.2

    273.05

    108.93

    17.07

    -

    -

    -

    P

    -

    -

    10 3/4

    79.2

    273.05

    117.86

    18.64

    -

    -

    -

     P

    -

    -

    10 3/4

    85.3

    273.05

    126.94

    20.24

         

     P

       

    11 3/4

    42

    298.45

    62.5

    8.46

     -

     -

     -

     -

     -

     -

    11 3/4

    47

    298.45

    69.94

    9.53

    PSB

     -

     -

     -

     -

     -

    11 3/4

    54

    298.45

    80.36

    11.05

    PSB

     -

     -

     -

     -

     -

    11 3/4

    60

    298.45

    89.29

    12.42

    PSB

    PSB

    PSB

    PSB

    PSB

    PSB

    11 3/4

    65

    298.45

    96.73

    13.56

     -

    P

    P

    P

    P

    P

    11 3/4

    71

    298.45

    105.66

    14.78

     -

    P

    P

    P

    P

    P

    13 3/8

    48

    339.72

    71.43

    8.38

    -

    -

    -

    -

    -

    -

    13 3/8

    54.5

    339.72

    81.1

    9.65

    PSB

    -

    -

    -

    -

    -

    13 3/8

    61

    339.72

    90.78

    10.92

    PSB

    -

    -

    -

    -

    -

    13 3/8

    68

    339.72

    101.19

    12.19

    PSB

    PSB

    PSB

    PSB

    PSB

    -

    13 3/8

    72

    339.72

    107.15

    13.06

    -

    PSB

    PSB

    PSB

    PSB

    PSB

    16

    65

    406.4

    96.73

    9.53

    -

    -

    -

    -

    -

    -

    16

    75

    406.4

    111.61

    11.13

    PSB

    -

    -

    -

    -

    -

    16

    84

    406.4

    125.01

    12.57

    PSB

    -

    -

    -

    -

    -

    16

    109

    406.4

    162.21

    16.66

    P

    P

    P

    -

    P

    P

    18 5/8

    87.5

    473.08

    130.21

    11.05

    PSB

    -

    -

    -

    -

    -

    20

    94

    508

    139.89

    11.13

    PSLB

    -

    -

    -

    -

    -

    20

    106.5

    508

    158.49

    12.7

    PSLB

    -

    -

    -

    -

    -

    20

    133

    508

    197.93

    16.13

    PSLB

    -

    -

    -

    -

    -

    P——Plain end; S——Short round thread;L——Long round thread;B——Buttress thread;E——Extreme line.

    Mechanical Properties:

    Group

    Grade

    Type

    Total elongation under load        %

    Yield strength   Mpa

    Tensile strength  min     MPa

    Hardness  max

    min

    max

    HRC

    HBW

    1

    2

    3

    4

    5

    6

    7

    8

    9

    1

     J55

    -

    0.5

    379

    552

    517

    -

    -

    K55

    -

    0.5

    379

    552

    655

    -

    -

     N80

    1

    0.5

    552

    758

    689

    -

    -

    N80

     Q

    0.5

    552

    758

    689

    -

    -

    2

    L80

    1

    0.5

    552

    655

    655

    23

    241

    L80

    9Cr

    0.5

    552

    655

    655

    23

    241

    L80

    13Cr

    0.5

    552

    655

    655

    23

    241

    C90

    1?2

    0.5

    621

    724

    689

    25.4

    255

    C95

    -

    0.5

    655

    758

    724

    -

    -

    T95

    1?2

    0.5

    655

    758

    724

    25.4

    255

    3

    P110

    -

    0.6

    758

    965

    862

    -

    -

    4

    Q125

    All

    0.65

    862

    1034

    931

    -

    -

    Tolerance

    Types of steel tubes

    Outer Diameter

    Wall Thickness

    Cold-rolled tubes

    Tube sizes(mm)

    Tolerances(mm)

    Tolerances(mm)

    <114.3

    ±0.79

    -12.5%

       

    Chemical Composition

    Standard Grade Chemical compositions(%)
    API SPEC 5CT J55 C Si Mn P S Cr Ni Cu Mo V
    K55 0.34~0.39 0.20~0.35 1.25~1.50 ≤0.020 ≤0.015 ≤0.15 ≤0.20 ≤0.20 / /
    N80 0.34~0.38 0.20~0.35 1.45~1.70 ≤0.020 ≤0.015 ≤0.15 / / / 0.11~0.16
    L80 0.15~0.22 ≤1.00 0.25~1.00 ≤0.020 ≤0.010 12.0~14.0 ≤0.20 ≤0.20 / /
    P110 0.26~0.395 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

    Mechanical Properties

    Grade Type Total elongation under load (%) Yield strength (min) Yield strength (max) Tensile strength min Mpa Hardness Max (HRC) Hardness Max(HBW)
    J55 - 0.5 379 552 517 - -
    K55 - 0.5 379 552 655 - -
    N80 1 0.5 552 758 689 - -
    N80 Q 0.5 552 758 689 - -
    L80 1 0.5 552 655 655 23 241
    L80 9Cr 0.5 552 655 655 23 241
    L80 13Cr 0.5 552 655 655 23 241
    C90 - 0.5 621 724 689 25.4 255
    C95 - 0.5 655 758 724 - -
    T95 - 0.5 655 758 724 25.4 255
    P110 - 0.6 758 965 862 - -
    Q125 All 0.65 862 1034 931 - -

    Anti-Corrosion Water Based Paint

    API Casing

    the packing of casing-01

    the packing of casing-02