Home / Standards / GB/T 893-2017 GB/T 893-2017 Active Retaining rings for bores 孔用弹性挡圈 Standard Type GBT ICS 21.060.30 CCS J13 Status 现行 Issue Date 2017-07-12 Implementation 2018-02-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会