... stainless steel 2).forged flange, forging flange 3)open die forging 4)Precision Processed With 3200 and 1600 ... requirements, such as forging shaft, forging rings, forging flange, gear shafts, gear rings, cast forgings, etc., ... requirements to the material of products.All the materials comply with GB, JIS, ISO, ANSI, ASTM, BS, DIN ... the entire production. carbon steel forged flange with new technology