Cast Iron fitting socket ( Coupling) 1.1/8''-6'' 2 BS,ANSI,DIN Thread ... supply many kinds of malleable iron pipe fittings: elbows, tees, sockets, bends, nipples, unions, crosses, flanges, plugs, backnuts, crosses over, round ... : 1/8'-6' Product ItemMalleable iron pipe fittings: elbows, tees, sockets, bends, nipples, unions, crosses, flanges, plugs, backnuts, crosses over, round ...