Home / Standards / GB/T 40123-2021 GB/T 40123-2021 Active Aluminium and aluminium alloy billet with high purity and fine grain 高纯净细晶铝及铝合金圆铸锭 Standard Type GBT ICS 77.150.10 CCS H61 Status 现行 Issue Date 2021-05-21 Implementation 2021-12-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A