Cast Iron fitting socket ( Coupling) 1.1/8''-6'' 2 BS,ANSI,DIN Thread Standard 3 Black,Galvanized 4 ISO,SGS,CIQ Cast Iron Pipe Fitting Hydraulic Quick ... , backnuts, crosses over, round caps etc. Cast Iron Pipe Fitting Hydraulic Quick Coupler, size: 1/8'-6' Product ItemMalleable iron pipe fittings: elbows, tees, sockets, bends ...