Couplings are used to connect two joints of casing pipes together.Coupling are short length of heavy wall pipe with the same threads on each end。We manufacture casing coupling strictly comply with
API 5CT latest standard.grade J-55.N-80,L-80 ,P-110.Q125.V150.
With our consummated manufacturing skill and considerate service ,We looking forward to your cooperation. As the host we are always welcome friends from all over the world.