321 Stainless Steel Blind Flanges

321 Stainless Steel Blind Flanges contain 17% chromium and 8% nickel. There are many materials used in making these types of flanges such as manganese, phosphorus, sulfur, nitrogen, titanium, and iron in the composition. The Chromium and nickel material stabilized with titanium. 321 is a grade of Stainless Steel Blind Flanges that are used to close the ends of the pipes.