What are the common materials of high pressure flange?

High pressure flanges for piping or equipment connected to a pressure above 10MPa. So, what is the material of the traditional high-pressure flange?

The main material of the traditional high-pressure flange is "steel", including carbon steel, stainless steel and alloy steel. Among them, in the carbon steel quality, the use of carbon steel is the most common in the 20#, Q235 and Q345 (mainly the 16Mn of the old GB); in stainless steel, 304L, F316, 316L of stainless steel is the most used; in alloy steel, the label is F9, F11, F12, The use of 16MnR and cr5mo alloy steels is added. In addition, to say that. At present, ceramic composite steel in the production of traditional high-pressure flange, is also gradually used. Furthermore, the abrasion resistance of the traditional high pressure flange with ceramic composite steel as the main material is proved to be much higher than other high pressure flange.