Home / Standards / GB/T 1112-2012 GB/T 1112-2012 Active Slot drills 键槽铣刀 Standard Type GBT ICS 25.100.20 CCS J41 Status 现行 Issue Date 2012-12-31 Implementation 2013-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A