... Standard 3 Black,Galvanized 4 ISO,SGS,CIQ Cast Iron Pipe Fitting Hydraulic Quick water Coupler size: ... of malleable iron pipe fittings: elbows, tees, sockets, bends, nipples, unions, crosses, flanges, plugs, backnuts, crosses over, round caps etc. Cast Iron ... Precise angles, Good antirust propertyProduct UsageSuitable for joining pipe lines of team gas oil airMechanical PropertiesTensile Strength>=33kg ...