Tubing and Casing Coupling

Couplings are short lengths of pipe used to connect 2 joints of tubing or casing. They come with painted colour codes on their. external surface to indicate their grades.. Standards and Technical Conditions for Supply :API Spec 5CT and 5B. Size:1.9"-20". GradeJ55,K55,N80-1,N80Q,L80-1,C90,C95,T95,P110,Q125. Tread types: NUE, EUE, VAM, STC, LTC, BTC, special clearance, XC.VAM TOP.NEW VAM.. Packing: Dy carton, wooden case, wooden pallet or customized.