Home / Standards / GB/T 20323-2020 GB/T 20323-2020 Active Milling cutters designation —Shank-type and bore-type milling cutters of solid or tipped design or with indexable cutting edges 铣刀代号 整体或镶齿结构或带可转位切削刃的带柄和带孔铣刀 Standard Type GBT ICS 25.100.20 CCS J41 Status 现行 Issue Date 2020-11-19 Implementation 2021-03-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A