Home / Standards / GB/T 21952-2023 GB/T 21952-2023 Active Polycristalline diamond insert,tipped—Dimensions,types 镶聚晶金刚石刀片 型式和尺寸 Standard Type GBT ICS 25.100.01 CCS J41 Status 现行 Issue Date 2023-09-07 Implementation 2024-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A