Stainless Steel Flange, Pipe Fittings, Valve manufacturer / supplier in China, offering ANSI B16.5 & JIS F7806 Certified Stainless Steel Flange DN50 Class 150/300 - 304/316L for Petrochemical and High-Pressure Pipelines, Manufacturer Stainless Steel Pipe Fitting RF Welding Neck Flange 16" 316 150lb ASME B16.5, Manufacturer Stainless Steel Pipe Fitting RF Welding Neck Flange 14" 316 150lb ASME B16.5 and so on.