Flange manufacturer / supplier in China, offering Bl Class150 Stainless Steel Blind Flanges Connection ANSI B16.5 with PT Test, GOST Pn25 Blind Stainless Steel 316ti FF Industrial Pipe Flange High Pressure with PT Test, Stainless Steel Wn Flange SS316/SS304L DIN En1092-1 BS4504 ASME B16.5 JIS GOST Class 150# and so on.