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API-5CT/5b Seamless Steel Oil OCTG Casing Pipe and Tubing Pipe for Oilfield Services J55/K55/N80/L80/P110/C95/T95/80s

API-5CT/5b Seamless Steel Oil OCTG Casing Pipe and Tubing Pipe for Oilfield Services J55/K55/N80/L80/P110/C95/T95/80s

API-5CT/5b Seamless Steel Oil OCTG Casing Pipe and Tubing Pipe for Oilfield Services J55/K55/N80/L80/P110/C95/T95/80s

API-5CT N80 oilfield casing pipe contains N80-1 and N80-Q types. Those two materials are absolutely consistent regarding the chemical composition and mechanical attributes, they are just various in the heat treatment.

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Features

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API-5CT N80 oilfield casing pipe contains N80-1 and N80-Q types. Those two materials are absolutely consistent regarding the chemical composition and mechanical attributes, they are just various in the heat treatment.
During heat treatment, N80-1 steel is treated by normalizing and tempering, while N80Q steel is treated by quenching and tempering. Therefore, the collapsing strength and internal pressure strength of N80Q are higher than that of N80-1. N80-1 or N80Q should be clearly shown by the designer when N80 casing is selected.
As its mechanical properties are higher than J55 and K55 types, it may very well be utilized to certain a little more challenging formations. With deeper downhole depth than J55 and K55 types, it can be applied for the exploitation of middle-level oil and gas.
Due to the high capability of N80 material, those API-5CT casing pipes are broadly applied in natural gas as well as coal bed methane extraction, and geothermal wells. 

Specifications
Inspection
Physical properties are checked and each length hydrostatically tested, normally to only 3,000 psi in the plain end (unthreaded) condition. The following are also checked:
●Dimensions
●Weights
●Straightness
●Lengths
Part of this inspection is to drift all lengths.
Despite all the American Petroleum Institute (API) specifications and testing, some tubing defects are still found after delivery; thus, some operators do further inspection. 

Inspection Method
●Size and surface inspection
●NDT and pressure test and third party certication
●Hydrostatic
●Drifting test
●Physical and chemicail analysis
●Hardness and pressure test.
●Electromagnetic
●Magnetic particle
●Ultrasonic

Size

Weight

Outside Diameter

Wall Thickness

End Finish

Grade

in

mm

in

mm

J55K55

L80

N80

C90T95

P110

4 1/2

9.50

4.500

114.3

0.205

5.21

PS

–

–

–

–

10.50

0.224

5.69

PSB

–

–

–

–

11.60

0.250

6.35

PSLB

PLB

PLB

PLB

PLB

13.50

0.290

7.37

–

PLB

PLB

PLB

PLB

15.10

0.337

9.56

–

–

–

–

PLB

5

11.50

5.00

127.00

0.220

5.59

PS

–

–

–

–

13.00

0.253

6.43

PSLB

–

–

–

–

15.00

0.296

7.52

PSLB

PLB

PLB

PLBE

PLB

18.00

0.362

9.19

–

PLB

PLB

PLBE

PLB

21.40

0.437

11.10

–

PLB

PLB

PLB

PLB

23.20

0.478

12.14

–



PLB


24.10

0.500

12.70

–



PLB


5 1/2

14.00

5.500

139.7

0.244

6.20

PS

–

–

–

–

15.50

0.275

6.98

PSLB

–

–

–

–

17.00

0.304

7.72

PSLB

PLB

PLB

PLBE

PLB

20.00

0.361

9.17

–

PLB

PLB

PLBE

PLB

23.00

0.415

10.54

–

PLB

PLB

PLBE

PLB

6 5/8

20.00

6.625

168.28

0.288

7.32

PSLB

–

–

–

–

24.00

0.352

8.94

PSLB

PLB

PLB

PLBE

PLB

28.00

0.417

10.59

–

PLB

PLB

PLBE

PLB

32.00

0.475

12.06

–

PLB

PLB

PLBE

PLB

7

17.00

7.00

177.80

0.231

5.87

–

–

–

–

–

20.00

0.272

6.91

PS

–

–

–

–

23.00

0.317

8.05

PSLB

PLB

PLB

PLBE

–

26.00

0.362

9.19

PSLB

PLB

PLB

PLBE

PLB

29.00

0.408

10.36

–

PLB

PLB

PLBE

PLB

32.00

0.453

11.51

–

PLB

PLB

PLBE

PLB

35.00

0.498

12.65

–

PLB

PLB

PLBE

PLB

38.00

0.540

13.72

–

PLB

PLB

PLBE

PLB

7 5/8

24.00

7.625

193.68

0.300

7.62

–

–

–

–

–

26.40

0.328

8.33

PSLB

PLB

PLB

PLBE

PLB

29.70

0.375

9.52

–

PLB

PLB

PLBE

PLB

33.70

0.430

10.92

–

PLB

PLB

PLBE

PLB

39.00

0.500

12.70

–

PLB

PLB

PLBE

PLB

42.80

0.562

14.27

–

PLB

PLB

PLB

PLB

45.30

0.595

15.11

–

PLB

PLB

PLB

PLB

47.10

0.625

15.88

–

PLB

PLB

PLB

PLB

8 5/8

24.00

8.625

219.08

0.264

6.71

PS

–

–

–

–

28.00

0.304

7.72

–

–

–

–

–

32.00

0.352

8.94

PSLB

–

–

–

–

36.00

0.400

10.16

PSLB

PLB

PLB

PLBE

PLB

40.00

0.450

11.43

–

PLB

PLB

PLBE

PLB

44.00

0.500

12.70

–

PLB

PLB

PLBE

PLB

49.00

0.557

14.15

–

PLB

PLB

PLBE

PLB

9 5/8

32.30

9.625

244.48

0.312

7.92

–

–

–

–

–

36.00

0.352

8.94

PSLB

–

–

–

–

40.00

0.395

10.03

PSLB

PLB

PLB

PLBE

–

43.50

0.435

11.05

–

PLB

PLB

PLBE

PLB

47.00

0.472

11.99

–

PLB

PLB

PLBE

PLB

53.50

0.545

13.84

–

PLB

PLB

PLBE

PLB

58.40

0.595

15.11

–

PLB

PLB

PLB

PLB

10 3/4

32.75

10.75

273.05

0.279

7.09

–

–

–

–

–

40.50

0.350

8.89

PSB

–

–

–

–

15.50

0.400

10.16

PSB

–

–

–

–

51.00

0.450

11.43

PSB

PSB

PSB

PSBE

PSB

55.50

0.495

12.57

–

PSB

PSB

PSBE

PSB

60.70

0.545

13.84

–

–

–

PSBE

PSB

65.70

0.595

15.11

–

–

–

PSB

PSB

13 3/8

48.00

13.375

339.73

0.330

8.38

–

–

–

–

–

54.50

0.380

9.65

PSB

–

–

–

–

61.00

0.430

10.92

PSB

–

–

–

–

68.00

0.480

12.19

PSB

PSB

PSB

PSB

PSB

72.00

0.514

13.06

–

PSB

PSB

PSB

PSB

16

65.00

16

406.40

0.375

9.53

–

–

–

–

–

75.00

0.438

11.13

PSB

–

–

–

–

84.00

0.495

12.57

PSB

–

–

–

–

109.00

0.656

16.66

P

P

P

–

P

18 5/8

87.50

18.625

473.08

0.435

11.05

PSB

–

–

–

–

20

94.00

20

508.00

0.438

11.13

PSLB

–

–

–

–

106.50

0.500

12.70

PSLB

–

–

–

–

133.00

0.635

16.13

PSLB

–

–

–

–

API-5CT/5b Seamless Steel Oil OCTG Casing Pipe and Tubing Pipe for Oilfield Services J55/K55/N80/L80/P110/C95/T95/80s are mainly exported to all parts of the world, our company are in line with the business philosophy of 'survival by quality and reputation' and our company has won the unanimous praise of our customers for many years. We continue to improve our competitiveness in the core areas of design, R&D and innovation, and marketing models. The beginning of cooperation is the beginning of high quality service!

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