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

API couplings for oil tubing and casing

Size and Specifications

Descriptiongs and size

Type of Tread

O.D*L(mm)

Weight(kg)

API 5 CT female

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*130.35

2.34

2-7/8"

EUE

93.17*130.35

2.4

3-1/2"

NUE

114.30*146.05

3.17

3-1/2"

EUE

120.65*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.Meterial: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 4-12",casing coupling from 4-1/2" 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 customer requests