API 5CT oil well casing coupling
1. API certificate
2. good quality
3. Strong supply capacity
4. Good after-sales service
Casing coupling
Mechanical property
1.Size:1.9"~20"
2.Material:J55,K55,N80-1,N80-Q,P110 etc.
3.Thread:NU,EU,STC,LTC,BTC,VAM TOP and other special thread type.
Ourcoupling is a type of oilfield drilling tool for the connection of ubing. It can effectively solve the problem
of fatigue fracture that is easily caused by the stress concentration of the available product. Our company is specialized
in producing the oil pipe with the outer diameter range from 60.32 to 114.30mm. The inner wall of product body is
connected with the tubing end by means of tapered thread. The coupling end combines with the oil pipe by adoption
of the same pitch of flat thread. In this way, our product can reduce the stress concentration that results from the
connection between the single tapered thread and the external thread of oil pipe. It offers wonderful connection
effect, and effectively prevents the tubing string from breaking off.
API 5CT oil well casing coupling