Home / Standards / GB/T 30853-2014 GB/T 30853-2014 Active Copper and copper alloy forging ring for the traction motors 牵引电机用铜及铜合金锻环 Standard Type GBT ICS 77.150.30 CCS H62 Status 现行 Issue Date 2014-07-24 Implementation 2015-02-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A