Coupling Manufacturer of Tubing and Casing coupling according to API SPEC 5CT AND 5B

API couplings for oil tubing and casing

Size and Specifications

Descriptions and size

Type of Thread

O.D*L(mm)

Weight(kg)

Tubing Coupling

2-3/8"

NUE

73.02*107.95

1.28

2-3/8"

EUE

77.80*123.82

1.55

2-7/8"

NUE 

88.90*130.18

2.34

2-7/8"

EUE

93.17*130.35

2.4

3-1/2"

NUE

107.95*142.88

3.17

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

1.Grade:J55, K55, N80-1, N80-Q, L80, C90, P110

2.We also supply permium thread products by customer's request

3.Size: tubing coupling from 1.9" to 4-1/2",Casing coupling fro4-1/2"to 13-3/8"

4.Type: NU, EU(tubing coupling), STC,LC,BTC(casing coupling). 

5.Surface treatment: Whole phosphating, or inside phosphating and outside coating

6.Packing: By carton, wooden case, wooden pallet, or by  requirements of customers