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Oil Casing, API 5CT Casing - Threeway Steel Co.,Ltd
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Oil Casing/Tubing J/K55

Standards and Technical Conditions for Supply:API Spec 5CT ISO13680
Uses:Casing serves as well sidewall
Tubing is used for extracting oil or gas from wells...

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Oil Casing, API 5CT Casing, Oil Tube

Threeway Steel Co., Ltd

E-mail: sales@srtsteelpipe.com

Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116

Phone:0086-731-8873-9521  

  • Description
  • Size

Casing: Casing is a wide range 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 wellbore from collapsing,  to allow drilling fluid to circulate, and extraction to take place. 

Tubing: Tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process. Tubing is manufactured in the same way as casing, except that an additional process known as "upsetting" is applied to thicken the pipes.


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 

-

-

-

-

-

Plain end; Short round thread;Long round thread;Buttress thread;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

-

-


OD/mm WT/mm
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
21.3 √ √ √ √ √
26.7 √ √ √ √ √ √
33.4 √ √ √ √ √ √
48.3 √ √ √ √ √ √ √ √
60.3 √ √ √ √ √ √ √ √
73 √ √ √ √ √ √ √ √ √ √
88.9 √ √ √ √ √ √ √ √ √ √ √
114.3 √ √ √ √ √ √ √ √ √ √ √ √
168.3 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
219.1 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
273.1 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
323.3 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
355.6 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
406.4 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
457.2 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
508 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
609.6 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
660.4 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
711.2 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √
762 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √