API 5CT steel coupling for oil well casing pipe

Tubing coupling is a kind of oil field drilling tools, mainly used for pipe connection. Tubing coupling mainly solves the existing coupling produce fatigue because of stress concentration easily broken problem.
Tubing coupling structure is: the end of the tubing and the coupling body wall in taper thread connections, the end of the coupling body and tubing with the same thread pitch flat way type screw thread connection. With ease of a single taper thread connection of tubing thread root characteristics of stress concentration, not easy to produce fatigue fracture, connection effect is good. To prevent oil well tubing string broken accidents.

API 5CT steel coupling for oil well casing pipe