Home / Standards / GB/T 2075 GB/T 2075 Active Classification and application of hard cutting materials for metal removal with defined cutting edges—Designation of the main groups and groups of application 切削加工用硬切削材料的分类和用途 大组和用途小组的分类代号 Standard Type GBT ICS 25.100.01 CCS J41 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会