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Couplings

Couplings

Type: API 5CT Tubing Couplings, API 5CT Casing Couplings

Size: 

Tubing Coupling: 1.9'' - 4-1/2'',

Casing Couping : 4-1/2'' - 13-3/8''


Steel Grade: J55, L80, N80 & P110
Standard: API 5CT and 5B PSL1/PSL2 J55,K55,N80-1,N80-Q, API 5CT and 5B L80-1,C90, C95,T95, P110, Q125

Thread Type: NUE/EUE/STC/LTC/BTC

Surface Treatment: Phosphating treatment
Color Code: J55 Green, L80 Red with brown strips, N80 Red with green strips, P110 White
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  • Description
  • Specification
  • Process
  • Packing
  • Images

Coupling types:

There are three kinds of couplings that include line pipe coupling, casing coupling and tubing coupling. We mainly provide API 5CT couplings. The common casing grade has J55, K55, N80, L80 and P110 etc.




Casing Coupling:


Applications
This coupling is a kind of cylinder with internal thread which is mainly used for joining two threaded oil casing pipes.

Standards
We mainly produce API SPEC 5CT and API SPEC 5B casing coupling.

Materials
This kind of product is suitable for H40, J55, K55, N80-1, N80Q, L80 and P110 material.

Specifications
The external diameter is 127~365.12mm（4 1/2"~13 3/8"）.

Tubing Joint
The tubing joint has STC (short thread connector), LTC (long thread connector), and BTC (buttress thread coupling).

Surface
The production inner and outside surface adopts phosphating method.

Product Package
We utilize carton, wooden box, salver or other ways according to clients’ requirement.


Tubing Coupling:


Description
It is used for connecting oil pipes together. It has solved the problem of existing couplings being to easy to break because of the stress concentration.

Structure
We mainly produce API SPEC 5CT and API SPEC 5B casing coupling.

Materials
The ends of oil pipe connect with the inside wall of coupling uses the tapered thread way and the ends of coupling connect with oil pipe adopts the same thread, same thread pitch and parallel thread way to connect. This kind of structure can remit the stress concentration of the external thread root caused by using single taper thread to connect oil pipe. So it is not easy to break with good connection efficiency and also can prevent the accident of tubing breaking and falling.

Application
The tubing coupling is a kind of cylinder with internal thread which is mainly used for joining two threaded oil casing pipes.

Standards
We mainly produce API SPEC 5CT and API SPEC 5B tubing coupling.

Materials
Our product is mainly suitable for H40, J55, N80-1, N80Q, L80 and P110 material.

Specifications
The external diameter is 55.88~141.3mm (1.9"~4 1/2").

Tubing Joint
The tubing joint includes NUE, EUE and SCC.

API Tubing Coupling

Descriptions and size

Type of Thread

O.D*L

Weight

(mm)

(kg)

Tubing Coupling

1.05

NUE

33.35*80.96

0.23

1.05

EUE

42.16*82.55

0.38

1.315

NUE

42.16*82.55

0.38

1.315

EUE

48.26*88.90

0.57

1.66

NUE

52.17*88.90

0.59

1.66

EUE

58.88*95.25

0.68

1.9

NUE

55.88*95.25

0.56

1.9

EUE

63.50*98.42

0.84

2-3/8″

NUE

73.02*107.95

1.28

2-3/8″

EUE

77.80*132.82

1.55

2-7/8″

NUE

88.90*130.18

2.34

2-7/8″

EUE

93.17*133.35

2.4

3-1/2″

NUE

107.95*142.88

3.71

3-1/2″

EUE

114.30*146.05

4.1

4″

NUE

120.65*146.05

4.35

4″

EUE

127.00*152.40

4.82

4-1/2″

NUE

132.08*155.58

4.89

4-1/2″

EUE

141.30*158.75

6.05


API Casing Coupling

Descriptions and size

Type of Thread

O.D*L

Weight

(mm)

(kg)

Casing Coupling

4-1/2″

STC

127.00*158.75

5.23

4-1/2″

LTC

127.00*177.80

4.15

4-1/2″

BTC

127.00*225.42

4.55

5″

STC

141.30*165.10

4.66

5″

LTC

141.30*196.85

5.75

5″

BTC

141.30*231.78

5.85

5-1/2″

STC

153.67*171.45

5.23

5-1/2″

LTC

153.67*203.20

6.42

5-1/2″

BTC

153.67*234.95

6.36

6-5/8″

STC

187.71*184.15

9.12

6-5/8″

LTC

187.71*222.25

11.34

6-5/8″

BTC

187.71*244.48

11.01

7″

STC

194.46*184.15

8.39

7″

LTC

194.46*228.60

10.83

7″

BTC

194.46*254.00

10.54

7-5/8″

STC

215.90*190.50

12.3

7-5/8″

LTC

215.90*234.95

15.63

7-5/8″

BTC

215.90*263.52

15.82

8-5/8″

STC

244.48*196.85

16.23

8-5/8″

LTC

244.48*254.00

21.67

8-5/8″

BTC

244.48*269.88

20.86

9-5/8″

STC

269.88*196.85

18.03

9-5/8″

LTC

269.88*266.70

25.45

9-5/8″

BTC

269.88*269.88

23.16

10-3/4″

STC

298.45*203.20

20.78

10-3/4″

BTC

298.45*269.88

25.74

11-3/4′

STC

323.85*203.20

22.64

11-3/4′

BTC

323.85*269.88

28.03

13-3/8″

STC

365.12*203.20

25.66

13-3/8″

BTC

365.12*269.88

31.77

16″

STC

431.80*228.6

34.91

16″

BTC

431.80*269.88

40.28

18-5/8″

STC

508.00*228.60

51.01

18-5/8″

BTC

508.00*269.88

62.68

20″

STC

533.40*228.6

43.42

20″

LTC

533.4*292.10

57.04

20″

BTC

533.40*269.88

50.1