Home / Standards / GB/T 40883-2021 GB/T 40883-2021 Active Microalloyed steel forgings—General specification 微合金钢锻件 通用技术条件 Standard Type GBT ICS 77.140.85 CCS J32 Status 现行 Issue Date 2021-11-26 Implementation 2022-06-01 Responsible Dept 国家标准委 Drafting Unit N/A