Casing

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Casing is a series of steel pipes that are set inside the drilled wells to stabilize well or boreholes. Every well is equipped with different casing according to drilling depth and geological condition. Our casings meet API Spec 5CT, API Spec 5B, PSL1, PSL2 and PSL3 standards. The bore diameter of customized products is between114.30 and 339.72mm.

Specifications and standards are as follow:API 5CT PSL1 Casing Production Specification

Serial Number	Steel Grade	Specification			Standard
		Outer Diameter /mm	Thickness/mm	Length/m
1	H40	114.30～339.72	5.21～12.19	6～12	API 5CT
	J55
	K55
2	M65	114.30～339.72	5.21～15.88
	N80-1
	N80Q
	R95
	L80-1
	C90-1
	T95-1
	C110
	P110
	Q125-1

API 5CT PSL2 Casing Production Specification

Serial Number	Steel Grade	Specification			Standard
		Outer Diameter /mm	Thickness/mm	Length/m
1	J55	114.30～339.72	5.21～12.19	6～12	API 5CT
	K55
	N80-1
2	M65	114.30～339.72	5.21～15.88
	N80Q
	R95
	L80-1
	C90-1
	T95-1
	P110
	Q125-1

API 5CT PSL3 Casing Production Specification

Serial Number	Steel Grade	Specification			Standard
		Outer Diameter /mm	Thickness /mm	Length /m
1	J55	114.30～339.72	5.21～15.88	6～12	API 5CT
	K55
2	M65
	N80Q
	R95
	L80-1
	C90-1
	T95-1
	P110
	Q125-1

Note:
H40 and C110 only reach PSL1 level
N80-1 reaches PSL2 level, not PSL3 level

Specific specifications

British System

Metric System

Type of pipe finishing

Outer Diameter

Thickness

Outer Diameter mm

Thickness mm

H40

J55/K55

M65

L80/R95

N80(1/Q）

C90/T95

C110

P110

Q125

5-1/2

14.00

139.70

6.20

5-1/2

15.50

139.70

6.98

PSLB

5-1/2

17.00

139.70

7.72

PSLB

PLB

5-1/2

20.00

139.70

9.17

PLB

5-1/2

23.00

139.70

10.54

PLB

5-1/2

26.80

139.70

12.70

5-1/2

29.70

139.70

14.27

5-1/2

32.60

139.70

15.88

5-1/2

35.30

139.70

17.45

5-1/2

38.00

139.70

19.05

5-1/2

40.50

139.70

20.62

5-1/2

43.10

139.70

22.22

6-5/8

20.00

168.28

7.32

PSLB

6-5/8

24.00

168.28

8.94

PSLB

PLB

6-5/8

28.00

168.28

10.59

PLB

6-5/8

32.00

168.28

12.06

PLB

17.00

177.80

5.87

20.00

177.80

6.91

23.00

177.80

8.05

PSLB

PLB

26.00

177.80

9.19

PSLB

PLB

29.00

177.80

10.36

PLB

32.00

177.80

11.51

PLB

35.00

177.80

12.65

PLB

38.00

177.80

13.72

PLB

42.70

177.80

15.88

46.40

177.80

17.45

50.10

177.80

19.05

53.60

177.80

20.62

57.10

177.80

22.22

7-5/8

24.00

193.68

7.26

7-5/8

26.40

193.68

8.33

PSLB

PLB

7-5/8

29.70

193.68

9.52

PLB

7-5/8

33.70

193.68

10.92

PLB

7-5/8

39.00

193.68

12.70

PLB

7-5/8

42.80

193.68

14.27

PLB

7-5/8

45.30

193.68

15.11

PLB

7-5/8

47.10

193.68

15.88

PLB

7-5/8

51.20

193.68

17.45

7-5/8

55.30

193.68

19.05

7-3/4

46.10

196.85

15.11

8-5/8

24.00

219.08

6.71

8-5/8

28.00

219.08

7.72

8-5/8

32.00

219.08

8.94

PSLB

8-5/8

36.00

219.08

10.16

PSLB

PLB

8-5/8

40.00

219.08

11.43

PLB

8-5/8

44.00

219.08

12.70

PLB

8-5/8

49.00

219.08

14.15

PLB

9-5/8

32.30

244.48

7.92

9-5/8

36.00

244.48

8.94

PSLB

9-5/8

40.00

244.48

10.03

PSLB

PLB

9-5/8

43.50

244.48

11.05

PLB

9-5/8

47.00

244.48

11.99

PLB

9-5/8

53.50

244.48

13.84

PLB

9-5/8

58.40

244.48

15.11

PLB

9-5/8

59.40

244.48

15.47

9-5/8

64.90

244.48

17.07

9-5/8

70.30

244.48

18.64

9-5/8

75.60

244.48

20.24

10-3/4

32.75

273.05

7.09

10-3/4

40.50

273.05

8.89

PSB

10-3/4

45.50

273.05

10.16

PSB

10-3/4

51.00

273.05

11.43

PSB

10-3/4

55.50

273.05

12.57

PSB

10-3/4

60.70

273.05

13.84

PSB

10-3/4

65.70

273.05

15.11

PSB

10-3/4

73.20

273.05

17.07

10-3/4

79.20

273.05

18.64

10-3/4

85.30

273.05

20.24

11-3/4

42.00

298.45

8.46

11-3/4

47.00

298.45

9.53

PSB

11-3/4

54.00

298.45

11.05

PSB

11-3/4

60.00

298.45

12.42

PSB

11-3/4

65.00

298.45

13.56

11-3/4

71.00

298.45

14.78

13-3/8

48.00

339.72

8.38

13-3/8

54.50

339.72

9.65

PSB

13-3/8

61.00

339.72

10.92

PSB

13-3/8

68.00

339.72

12.19

PSB

13-3/8

72.00

339.72

13.06

PSB

Ps: P--- Plain-end; S--- Short round thread; L--- Long round thread; B--- Buttress thread

China geological equipment group Co., Ltd (CGE) is a wholly-owned subsidiary of a world top 500 enterprise - China National Machinery Industry Corporation. It devotes to offer high-quality equipment, instruments and drilling tools in fields like national resources, energy, environment and construction. CGE has two oil drilling bases: one in Zhangjiakou, Hebei and the other in Wuxi, Jiangsu. Zhangjiakou base mainly produces API Spec 11B sucker rods, including sinker bars, high strength sucker rods, hollow sucker rods, ordinary sucker rods, tubing and casing couplings; Wuxi base mainly produces API Spec 5CT and API Spec 5B casings.