English 中文

Casing & Tubing Couplings

Date: Oct 27, 2020
share us:
 

Tubing and casing couplings

 

Zhengzhou,October 27th, 2020


The coupling is made of thick-walled steel about six inches to one foot long. This shorter pipe is used to connect the two joints of the casing/pipe. The internal thread (female thread) of the coupling is processed to match the external thread (male thread) of the sleeve/pipe long joint. The two joints of the pipe are screwed into opposite ends of the joint.


Couplings are only a small part of the price of a string of tubes. However, they are usually purchased with a very fast turnaround time, so customers can send pipeline orders to their customers. The end user is usually an oil company or a drilling rig.

 

A short tube used to connect two joints of a casing. The internal thread (female thread) of the casing coupling is processed to match the external thread (male thread) of the casing long joint. The two joints of the casing are screwed into the opposite ends of the casing joint.

 

Supply standards and technical conditions: API Spec 5CT and 5B

Size: 1.9” – 20”

Grade: K55, J55, L80-1,N80-1, N80Q, L80-1, C90, C95, T95, P110, Q125

Tread types: STC, LTC, BTC,NUE, EUE, VAM, STC, LTC, BTC, special customs clearance, XC, VAM TOP, NEW VAM.

 

API Casing Coupling:

 

Specification

Size (Pipe OD) (in)

4-1/2, 5, 5-1/2, 6-5/8, 7, 7-5/8, 8-5/8, 9-5/8, 10-3/4, 11-3/4, 13-3/8, 16, 18-5/8, 20

Threading

Short Round-Thread Casing (STC)

 

Long Round-Thread Casing (LC)

Buttress Thread Casing (BC)

Grade

H-40, J-55, K-55, C-75, L-80, N-80, C-95, AS-95, P-110, L80-13CR

API CASING COUPLINGS – SHORT THREAD(STC)

Casing Size OD (in)

Coupling Size OD (in)

Length (in)

Weight per Coupling (kg)

Palletized Carton Quantity(pc)

Palletized Carton Weight(kg)

4 1/2

5.000

6.250

3.62

343

1242

5

5.563

6.500

4.66

210

979

5 1/2

6.050

6.750

5.23

216

1130

6 5/8

7.390

7.250

9.12

115

1049

7

7.875

7.250

8.39

120

1007

7 5/8

8.500

7.500

12.30

80

984

8 5/8

9.625

7.750

16.23

60

974

9 5/8

10.625

7.750

18.03

50

902

10 3/4

11.750

8.000

20.78

45

935

11 3/4

12.750

8.000

22.64

35

793

13 3/8

14.375

8.000

25.66

25

642

18-5/8

20.000 9.000 54.01    

20

21.000

9.000

98.25

 –

API CASING COUPLINGS – LONG THREAD(LC)

Casing Size OD (in)

Coupling Size OD (in)

Length (in)

Weight per Coupling (kg)

Palletized Carton Quantity(pc)

Palletized Carton Weight(kg)

4 1/2

5.000

7.000

4.15

294

1220

5

5.563

7.750

5.75

210

1208

5 1/2

6.050

8.000

6.42

180

1156

6 5/8

7.390

8.750

11.34

100

1134

7

7.875

9.000

10.83

100

1083

7 5/8

8.500

9.250

15.63

80

1250

8 5/8

9.625

10.000

21.67

48

1040

9 5/8

10.625

10.500

25.45

40

1018

API Casing Couplings Buttress Thread(BTC)

Casing Size OD (in)

Coupling Size OD (in)

Length (in)

Weight per Coupling (kg)

Palletized Carton Quantity(pc)

Palletized Carton Weight(kg)

4 1/2

5.000

8.875

4.55

196

892

5

5.563

9.125

5.85

144

843

5 1/2

6.050

9.250

6.36

144

916

6 5/8

7.390

9.625

11.01

92

1013

7

7.875

10.000

10.54

80

844

7 5/8

8.500

10.375

15.82

64

1013

8 5/8

9.625

10.625

20.86

48

1002

9 5/8

10.625

10.625

23.16

40

927

10 3/4

11.750

10.625

25.74

40

1030

18-5/8

20.000

10.625

62.68

 

 

120

21.000

10.625

20.01

 

 

API Tubing Coupling:

 

Specification

Size (Pipe OD) (in)

1.900, 2-3/8, 2-7/8, 3-1/2, 4, 4-1/2

Upset

Non Upset

 

External Upset

Grade

J-55, C-75, L-80, N-80, C-95, P-110

Option

Electro-zinc plated

 

Phosphorised

DETAILED API TUBING COUPLINGS:

 

 

Tubing SizeOD

Coupling Size OD

Length

Weight per Piece

Palletized CartonQuantity

pc

Palletized Carton Weight

kg

In

In

In

kg

API EUE Tubing Couplings

1.9

2.188

3.375

0.84

2800

2352

2 7/8

3.063

4.875

1.55

1444

2239

4 1/2

5.563

6.500

6.05

252

1525

API NUE Tubing Couplings

2 3/8

2.875

4.500

1.28

1512

1936

3 1/2

4.250

5.625

3.71

502

1863

4

4.726

5.750

4.35

382

1662

 

 

Back to List
Inquiry
Phone
Email