Home / Standards / GB/T 4392-2019 GB/T 4392-2019 Active Slugging open-end wrenches and slugging box-end wrenches 敲击呆扳手和敲击梅花扳手 Standard Type GBT ICS 25.140.30 CCS J47 Status 现行 Issue Date 2019-08-30 Implementation 2020-03-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A