Home / Standards / GB/T 921-1986 GB/T 921-1986 Active Round wire circlips 钢丝锁圈 Standard Type GBT ICS 21.060.30 CCS J13 Status 现行 Issue Date 1986-07-02 Implementation 1987-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A