Home / Standards / GB/T 40303-2021 GB/T 40303-2021 Active General specification for GH4169 alloy bars GH4169合金棒材通用技术条件 Standard Type GBT ICS 77.140.99 CCS H57 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A