Home / Standards / GB/T 37205-2018 GB/T 37205-2018 Active Synchronous belt drives—Pulleys with AT trapezoidal profile system 同步带传动 AT型梯形齿同步带轮 Standard Type GBT ICS 21.220.10 CCS J18 Status 现行 Issue Date 2018-12-28 Implementation 2019-11-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A