Home / Standards / GB/T 9074.31-2017 GB/T 9074.31-2017 Active Conical spring washers for assemblies 组合件用锥形弹性垫圈 Standard Type GBT ICS 21.060.30 CCS J13 Status 现行 Issue Date 2017-12-29 Implementation 2018-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A