Special clearance oil pipe coupling

Specification: 2-3 / 8 "2-7 / 8" 3-1 / 2 "
Steel grade: J55 / K55 n80-1 / n80-q l80-1 P110, etc
Buckle type: eue external thickened special clearance oil pipe coupling
Main parameters: the product complies with API 5CT / 5B standard.