This standard applies to hot platings and belts for bellows structures with a thickness of 0.7mm to 10mm. It is mainly used for special structures such as pipe networks, culverts, underground water storage tanks, pedestrian aisles and public pipe corridors. The standard specifies the terms, definitions, classification, dimensions, shapes, technical requirements, test methods, inspection rules, Encasement and mass certificates of steel plates and belts. By clarifying the product performance requirements, it provides reliable material support for the design and application of bellows, ensuring their durability and structural safety under various conditions of use.