Valve, Ball Valve, Gate Valve manufacturer / supplier in China, offering Full Welded Ball Valve DN80 Class 600 316ss API 6D Monogrammed for Oil & Gas -40º C~121º C, Full Welded Ball Valve DN300 Pn25 20# Steel Anti-Corrosion Coating for Oil Pipeline API 6D Certified, 20, 000+ Units Exported Full Welded Ball Valve DN100-DN600 Customized API 6D Certified 10 Days Lead Time and so on.