Flange Ball Valve, Trunnion Ball Valve, Butterfly Valve manufacturer / supplier in China, offering GB Standard Fully Welded Ball Valve Used in Water, Gas, Fully Welded Ball Valve Double-Discharge Fully Welded Ball Valve Ss\CS Gas Ball Valve with Diameter Range From DN150 to DN1600., High-Quality Fully Welded Ball Valve - Full Bore/Reduced Bore with Handle/Turbine in Ss/CS. Plus Heating Ball Valve and Gas Ball Valve for Optimal Performance. and so on.