Home / Standards / GB/T 17111 GB/T 17111 Abolished Cutting tools--Designation of high-speed steel groups 切削刀具 高速钢分组代号 Standard Type GBT ICS 25.100.10 CCS J41 Status 废止 Issue Date 1997-11-13 Implementation 1998-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会