Supplier of API-5CT Couplings, Casing Pipe and Tubing Pipe, Reaching The Most Stringent Standards.

API-5CT Integral-joint Tubing Pipe

Integral-joint Tubing PIpe

Integral-joint Tubing PIpe

Integral-joint tubing upsetting at one end, external threading, and external upsetting at the other end, internal threading. API integral-joint tubing is on the market in OD dimensions of 1.315 to a couple of.063 inch.

API integral-joint tubing provides 10-round form together with a joint strength which is less than the body minimum yield, this reduces its use.

The small OD of integral-joint tubing enables its use inside of larger tubing strings or inside of wells as unloading or vent strings.

The couplings will need to meet all the minimum specifications outlined in API Spec. 5CT. API Spec. 5B3 and API RP 5B14 cover threading, gauging, and thread inspection.

Specifications

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Tolerances

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Mechanical Properties

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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

Dimensions and Weight

sizes OD

D

mm

weight wt

t

mm

Type of end
1 2 NU kg/m EU kg/m IJ kg/m
NU EU IJ
H40 J55 L80 N80 1¸Qàà C90 T95 P110
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
2-3/82-3/8

2-3/8

2-3/8

2-3/8

4.004.60

5.80

6.60

7.35

-4.70

5.95

7.45

60.3260.32

60.32

60.32

60.32

5.956.85

8.63

9.82

10.94

-6.99

8.85

11.09

4.244.83

6.45

7.49

8.53

PUPNU

PNPNU

PNPNU

PNU

P

PU

PNPNU

PNU

PNPNU

PNU

P

PU

PNPNU

PNU

P

PU

-PNU

PNU

2-7/82-7/8

2-7/8

2-7/8

2-7/8

2-7/8

6.407.80

8.60

9.35

10.50

11.50

6.507.90

8.70

9.45

73.0273.02

73.02

73.02

73.02

73.02

9.5211.61

12.80

13.91

15.63

17.11

9.6711.76

12.95

14.06

5.517.01

7.82

8.64

9.96

11.18

PNU-

PNU-

PNUPNU

PNU

PU

P

P

PNUPNU

PNU

PNUPNU

PNU

PU

P

P

PNUPNU

PNU

PU

P

P

PNUPNU

PNU

3-1/23-1/2

3-1/2

3-1/2

3-1/2

3-1/2

3-1/2

7.709.20

10.20

12.70

14.30

15.50

17.00

-9.30

12.95

88.9088.90

88.90

88.90

88.90

88.90

88.90

11.4613.69

15.18

18.90

21.28

23.07

25.30

-13.84

19.27

5.496.45

7.34

9.52

10.92

12.09

13.46

PNPNU

PN

PNPNU

PN

PNPNU

PN

PNU

P

P

P

PNPNU

PN

PNU

PNPNU

PN

PNU

P

P

P

PNPNU

PN

PNU

P

P

P

-PNU

PNU

44

4

4

4

4

9.5010.70

13.20

16.10

18.90

22.20

-11.00

101.60101.60

101.60

101.60

101.60

101.60

14.14-

19.64

23.96

28.13

33.04

-16.37

5.746.65

8.38

10.54

12.70

15.49

PNPU

PNPU

PNPU

P

P

P

P

PNPU

PNPU

P

P

P

P

PNPU

P

P

P

P

4-1/24-1/2 12.6015.20 12.75- 114.30114.30 18.7522.62 18.97- 6.888.56 PNU- PNU- PNUP PNU- PNUP PNUP
4-1/24-1/2

4-1/2

4-1/2

4-1/2

17.0018.90

21.50

23.70

26.10

114.30114.30

114.30

114.30

114.30

25.3028.13

32.00

35.27

38.84

9.6510.92

12.70

14.22

16.00

PP

P

P

P

PP

P

P

P

PP

P

P

P

P——Plain end;N—Non-upset threaded and coupled;U—External upset threaded and coupled;I—insert joint.