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

API-5CT NUE Tubing Pipe

API-5CT NUE Tubing Pipe

API-5CT NUE Tubing Pipe

API non-upset (NUE) tubing is put to use much less than EUE tubing.

The cost of NUE is usually just a bit less than EUE, along with the joint strength is substantially less. The coupling joint diameter of NUE is less than EUE, which provides certain benefits in cases where clearance is small.

API NUE joints are available in sizes of 1.050 to 4.500 inch.

Specifications

[table “” not found /]

Tolerances

[table “” not found /]

Mechanical Properties

[table “” not found /]

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 ODDmm weight wttmm 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
2-3/82-3/82-3/82-3/8

2-3/8

4.004.605.806.60

7.35

-4.705.95-

7.45

—-

60.3260.3260.3260.32

60.32

5.956.858.639.82

10.94

-6.998.85-

11.09

—-

4.244.836.457.49

8.53

PUPNU–

PNPNU–

PNPNUPNUP

PU

PNPNUPNU-

PNPNUPNUP

PU

PNPNUPNUP

PU

-PNUPNU-

2-7/82-7/82-7/82-7/8

2-7/8

2-7/8

6.407.808.609.35

10.50

11.50

6.507.908.709.45

—-

73.0273.0273.0273.02

73.02

73.02

9.5211.6112.8013.91

15.63

17.11

9.6711.7612.9514.06

—-

5.517.017.828.64

9.96

11.18

PNU—

PNU—

PNUPNUPNUPU

P

P

PNUPNUPNU-

PNUPNUPNUPU

P

P

PNUPNUPNUPU

P

P

PNUPNUPNU-

3-1/23-1/23-1/23-1/2

3-1/2

3-1/2

3-1/2

7.709.2010.2012.70

14.30

15.50

17.00

-9.30-12.95

—-

88.9088.9088.9088.90

88.90

88.90

88.90

11.4613.6915.1818.90

21.28

23.07

25.30

-13.84-19.27

—-

5.496.457.349.52

10.92

12.09

13.46

PNPNUPN-

PNPNUPN-

PNPNUPNPNU

P

P

P

PNPNUPNPNU

PNPNUPNPNU

P

P

P

PNPNUPNPNU

P

P

P

-PNU-PNU

4444

4

4

9.5010.7013.2016.10

18.90

22.20

-11.00–

—-

101.60101.60101.60101.60

101.60

101.60

14.14-19.6423.96

28.13

33.04

-16.37–

—-

5.746.658.3810.54

12.70

15.49

PNPU–

PNPU–

PNPUPP

P

P

PNPU–

PNPUPP

P

P

PNPUPP

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
4-1/24-1/24-1/24-1/2

4-1/2

17.0018.9021.5023.70

26.10

—-

—-

114.30114.30114.30114.30

114.30

25.3028.1332.0035.27

38.84

—-

—-

9.6510.9212.7014.22

16.00

—-

—-

PPPP

P

—-

PPPP

P

PPPP

P

—-

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