Flange gaskets are made of various materials depending on the pressure rating, ranging from low-pressure asbestos gaskets and high-pressure asbestos gaskets to metal gaskets.
1. Classified by material: carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon-bonded asphalt, PPR, etc.
2. Classified by manufacturing method: forged flanges, cast flanges, spliced flanges, cut flanges, rolled flanges (extra-large sizes).
3. Classified by manufacturing standard: Chinese national standards (chemical industry standards, petroleum standards, power industry standards, machinery industry standards, marine standards), American standards, German standards, Japanese standards, Russian standards, etc.
