Flange, Steel Pipe Flange, Stainless Flange manufacturer / supplier in China, offering 316L Three Piece Automatic Welding Ba Ball Valve 6" High Quality, Large Caliber Stainless Steel Flange DN1250 304L Pn20/50 B Series, Large Diameter Stainless Steel Flange DN1050 304L Pn20/50 B Series and so on.