Tubing Coupling is used to connect two joints of tubing pipe together. Tubing coupling is short length of heavy wall pipe with the same thread on each end.
Specification of API Tubing Coupling | |||
No. | Size | Thread | Grade |
1 | 2-3/8" | EUE NUE | J55 K55 N80 L80 P110 |
2-7/8" | |||
3-1/2" | |||
4" | |||
4-1/2" |