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”
Grade: J55,K55,N80-1,N80Q,L80-1,C90,C95,T95,P110,Q125

Tread types: NUE, EUE, STC, LTC, BTC, special clearance, XC.

Packing: by carton, wooden case, wooden pallet or customized