Home / Standards / GB/T 39733-2020 GB/T 39733-2020 Abolished Recycling iron-steel materials 再生钢铁原料 Standard Type GBT ICS 77.140.01 CCS H40 Status 废止 Issue Date 2020-12-14 Implementation 2021-01-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A