Casing & Tubing

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Coupling

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Casing Couplings

Casing coupling is a short length of pipe used to connect two joints of casing pipes. 

It has internal threads (female thread) machined to match the external threads (male thread) of the long joints of casing pipe. 

The two joints of casing are threaded into opposite ends of the casing coupling.


Specification of Casing Couplings

Casing Size OD(in)


Coupling size OD(in)


Length(in)


Weight per coupling(kg)


Quantity per pallet

Pallet 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

7.656

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


Tubing Couplings


Tubing Coupling can be widely used in industrial petroleum pipeline system, cold and hot water supply, heating supply, fire protection, medicinal gas, etc. It has already replaced welding fittings in most countries.


Specification of Tubing Couplings

Size

Type of Thread

O.D*L (mm)

Weight (kg)

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


Couplings are manufactured with best coupling stock from mills that have undergone our stringent qualification process. All our couplings are made as per latest  API Specifications.  The Grades: H40,J55, K55, N80, R95,L80, C90, T95, P110, Q125.