This standard specifies the product classification, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of polytetrafluoroethylene corrugated compensators (hereinafter referred to as compensators). This standard applies to PTFE corrugated compensators used to compensate for thermal displacement, mechanical displacement, vibration absorption and noise reduction of corrosion-resistant pipelines and equipment. The design temperature of the compensator is -50~180℃.