Home / Standards / GB/T 7758-2020 GB/T 7758-2020 Active Rubber, vulcanized—Determination of low-temperature characteristics—Temperature-retraction procedure (TR test) 硫化橡胶 低温性能的测定 温度回缩程序(TR 试验) Standard Type GBT ICS 83.060 CCS G40 Status 现行 Issue Date 2020-12-14 Implementation 2021-07-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A