1.Name: API 5CT Couplings for Casing 2.Std Ref: API 5 CT 3.Grade: J55,K55,N80,L80,C90,P110,N80-1,N80-Q 4.Technics:hot rolling Descriptions and specifications Product NameSpecificationType of threadOD*L(mm)Unit WeightAPI 5CT couplings for casing4-1/2"STC127.00*158.755.234-1/2"LTC127.00*177.804.154-1/2"BTC127.00*225.424.555"STC141.30*165.104.665"LTC141.30*196.855.755"BTC141.30*231.785.855-1/2" ...