Butterfly Valve, Gate Valve, Check Valve manufacturer / supplier in China, offering Flanged Cast Ductile Iron Ggg50 Metal Seat Handwheel Operated DN300 Water Factory Pn10 Gate Valve, 8" Norminal Pressure Class 1500 Gear Operation for Industrial Application China Factory, Body ASTM A350 Lf2 Norminal Pressure Class 1500 8" Ball Valve and so on.