Home / Standards / GB/T 2077-1987 GB/T 2077-1987 Abolished Indexable hardmetal (carbide) inserts--Corner radii 硬质合金可转位刀片圆角半径 Standard Type GBT ICS 25.100 CCS H72 Status 废止 Issue Date 1987-06-26 Implementation 1988-03-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A