Home / Standards / GB/T 10855 GB/T 10855 Active Inverted tooth(silent) chains and sprockets 齿形链和链轮 Standard Type GBT ICS 21.220.30 CCS J18 Status 现行 Issue Date 2016-02-24 Implementation 2016-09-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会