API 5B pipe fitting coupling,pipe fitting coupling as API
API 5B pipe fitting coupling,pipe fitting coupling as API
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
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