... socket ( Coupling) 1.1/8''-6'' 2 BS,ANSI,DIN Thread Standard 3 Black,Galvanized 4 ISO,SGS,CIQ Cast Iron Pipe ... a professional manufacture we supply many kinds of malleable iron pipe fittings: elbows, tees, sockets, bends, nipples, unions, crosses, ... , Precise angles, Good antirust propertyProduct UsageSuitable for joining pipe lines of team gas oil airMechanical PropertiesTensile Strength>=33kg/ ...