Forging flange is a mechanical properties of products, its raw materials are generally blank, and then cut, and then continue to beat, in order to eliminate segregation, loose steel ingot defects. The price and mechanical properties are higher than ordinary casting flange a grade. The main materials of forging flange are carbon steel, alloy steel, stainless steel. The main standards are national standard, electric standard, American standard, German standard, Japanese standard and so on. The main antiseptic treatments are oiling and galvanizing. Forged flange of the pressure, temperature performance is better, generally suitable for high pressure and high temperature working environment.