API Tubing coupling and crossover
The tubing coupling structure is: the tubing end is connected with the inner wall of the coupling in a tapered thread manner, and the end of the coupling body is connected with the tubing in a flat thread manner with the same thread and pitch. The utility model has the characteristics of relieving the stress concentration at the root of the external thread of the single taper thread connecting tubing, and is not easy to produce fatigue fracture, with good connection effect. Effectively prevent the occurrence of oil well string breaking accident.
Coupling is divided into tubing coupling and casing coupling. The commonly used steel grades are J55, K55, N80, L80, P110, etc.
We have just completed the production of tubing couplings and crossovers. Our product quality is strictly in accordance with API standards and the size required by customers.
