Material characteristics Corrosion resistance: The main materials are 304, 304L, 316, 316L, etc., because it contains chromium, nickel and other alloying elements, it can form a dense oxide film on the surface, effectively resist a variety of medium corrosion, and is widely used in corrosive environment such as chemical industry and seawater treatment. High strength: good mechanical properties, high strength, can withstand greater pressure and tension, to ensure that the pipeline connection is stable. Good processing performance: easy to process molding, can be forged, casting, machining and other ways to make a variety of specifications and shapes of flanges to meet different engineering needs.