... steel,WCBDiscDuctile iron,CF8,CF8M,C95400,C95500StemSS416,SS420,SS431,SS316SeatNBR,EPDMSuitale mediumSewage, Sea water, Air, Foodstuff and OilThese products ... valves, check valves, gate valves and so on with the materials of ductile iron, carbon steel, stainless steel to ... order. Our products are designed and manufactured in accordance ...