Product

oill casing

Application

Oil well casing serves as well sidewall

Pipe Standard

API SPEC 5CT/ISO 11960,GB/T 19830-2011

Size

OD: 114.3-508mm

WT: 5.21-16.13mm

Size Tolerance

OD≥114.3mm, Tolerances: +1%/-0.5%

WT:-12.5%

Length

R1(4.88~7.62m);R2(7.62~10.36m);R3(10.36~14.63m)

Thread types

STC, LTC, BTC, special clearance, XC, VAM TOP, NEW VAM.

API 5CT Well Casing Dimension:

Lable

Type of End-finish

Inch

Weight Desination

OD(mm)

WT(mm)

J55/K55

N80

L80

C90/T95

P110

Q125

4 1/2

9.5

114.3

5.21

PS

-

-

-

-

-

10.5

114.3

5.69

PSB

-

-

-

-

-

11.6

114.3

6.36

PSLB

PLB

PLB

PLB

PLB

-

13.5

114.3

7.37

-

PLB

PLB

PLB

PLB

-

15.1

114.3

8.56

-

-

-

-

PLB

PLB

5

11.5

127

5.59

PS

-

-

-

-

-

13

6.43

PSLB

-

-

-

-

-

15

7.52

PSLBE

PLBE

PLBE

PLBE

PLBE

-

18

9.19

-

PLBE

PLBE

PLBE

PLBE

PLBE

21.4

11.1

-

PLB

PLB

PLB

PLB

PLB

23.2

12.14

-

PLB

PLB

PLB

PLB

PLB

24.1

12.7

-

PLB

PLB

PLB

PLB

PLB

5 1/2

14

139.7

6.2

PS

-

-

-

-

-

15.5

6.98

PSLBE

-

-

-

-

-

17

7.72

PSLBE

PLBE

PLBE

PLBE

PLBE

-

20

9.17

-

PLBE

PLBE

PLBE

PLBE

-

23

10.54

-

PLBE

PLBE

PLBE

PLBE

PLBE

26.8

12.7

-

-

-

P

-

-

29.7

14.27

-

-

-

P

-

-

32.6

15.88

-

-

-

P

-

-

35.3

17.45

-

-

-

P

-

-

38

19.05

-

-

-

P

-

-

40.5

20.62

-

-

-

P

-

-

43.1

64.14

-

-

-

P

-

-

6 5/8

20

168.28

7.32

PSLB

24

8.94

PSLBE

PLBE

PLBE

PLBE

PLBE

-

28

10.59

-

PLBE

PLBE

PLBE

PLBE

-

32

12.06

-

PLBE

PLBE

PLBE

PLBE

PLBE

7

20

177.8

6.91

PS

23

8.05

PSLBE

PLBE

PLBE

PLBE

-

-

26

9.19

PSLBE

PLBE

PLBE

PLBE

PLBE

-

29

10.6

PLBE

PLBE

PLBE

PLBE

32

11.51

PLBE

PLBE

PLBE

PLBE

35

12.65

PLBE

PLBE

PLBE

PLBE

PLBE

38

13.72

PLBE

PLBE

PLBE

PLBE

PLBE

7 5/8

26.4

193.67

8.33

PSLBE

PLBE

PLBE

PLBE

-

-

29.7

9.52

-

PLBE

PLBE

PLBE

PLBE

-

33.7

10.92

-

PLBE

PLBE

PLBE

PLBE

-

39

12.7

-

PLBE

PLBE

PLBE

PLBE

PLBE

42.8

14.27

-

PLB

PLB

PLB

PLB

PLB

45.3

15.11

-

PLB

PLB

PLB

PLB

PLB

47.1

15.88

-

PLB

PLB

PLB

PLB

PLB

8 5/8

24

219.08

6.71

PS

-

-

-

-

-

28

7.72

-

-

-

-

-

-

32

8.94

PSLBE

-

-

-

-

-

36

10.16

PSLBE

PLBE

PLBE

PLBE

-

-

40

11.43

-

PLBE

PLBE

PLBE

PLBE

-

44

12.7

-

PLBE

PLBE

PLBE

PLBE

-

49

14.15

-

PLBE

PLBE

PLBE

PLBE

PLBE

9 5/8

36

244.48

8.94

PSLB

-

-

-

-

-

40

10.03

PSLBE

PLBE

PLBE

PLBE

-

-

43.5

11.05

-

PLBE

PLBE

PLBE

PLBE

47

11.99

-

PLBE

PLBE

PLBE

PLBE

PLBE

53.5

13.84

-

PLBE

PLBE

PLBE

PLBE

PLBE

58.4

15.11

-

PLB

PLB

PLB

PLB

PLB

10 3/4

40.5

273.05

8.89

PSB

-

-

-

-

-

45.5

10.16

PSBE

-

-

-

-

-

51

11.43

PSBE

PSBE

PSBE

PSBE

PSBE

-

55

12.57

-

PSBE

PSBE

PSBE

PSBE

-

60.7

13.84

-

-

-

PSBE

PSBE

PSBE

65.7

15.11

-

-

-

PSB

PSB

PSB

113/4

47

298.45

9.53

PSB

-

-

-

-

-

54

11.05

PSB

-

-

-

-

-

60

12.42

PSB

PSB

PSB

PSB

PSB

PSB

13 3/8

48

339.72

8.38

-

-

-

-

-

-

54.5

9.65

PSB

-

-

-

-

-

61

10.92

PSB

-

-

-

-

68

12.19

PSB

PSB

PSB

PSB

PSB

-

72

13.06

-

PSB

PSB

PSB

PSB

PSB

16

75

406

11.13

PSB

-

-

-

-

-

84

12.57

PSB

-

-

-

-

-

109

16.66

P

P

P

-

P

P

20

94

508

11.13

PSLB

-

-

-

-

-

30

96

762

16.13

PSLB

-

-

-

-

-

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

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