Valve, Ball Valve, Gate Valve manufacturer / supplier in China, offering Full Welded Ball Valve DN50-DN300 Class 150/300 316L Ss API 6D Certified -20º C~180º C, Fully Welded Ball Valve Class 300 DN100-250 for Oil Pipelines 100% Flaw Detection Pass Rate, 1.5mm Wall Thickness 316L Sanitary Butterfly Valve Medical Grade Flange Butterfly Valve Pressure Resistance 0.8MPa Support DN10-DN200 Specification Customized and so on.