1)Ductile Iron Grooved Fittings. 2)Finish:Paint ,Epoxy Powder and Darcromet 3)Size:1 ... municipal constructions like water supplying ,gas supplying, heat supplying,etc2)Industrial pipeline system on shipping ,mine, oil field,textile,powder plant,etc ... .3)Pipeline system on subway station ,railway station ,airport, seaport,bridge,etc Pipe Fittings FM & UL Ductile Iron ...