Home / Standards / GB/T 29503-2020 GB/T 29503-2020 Active Aluminium alloy stretched plates 铝合金预拉伸板 Standard Type GBT ICS 77.150.10 CCS H61 Status 现行 Issue Date 2020-06-02 Implementation 2021-05-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A