Home / Standards / GB/T 20565-2022 GB/T 20565-2022 Active Iron ores and direct reduced iron—Vocabulary 铁矿石和直接还原铁 术语 Standard Type GBT ICS 73.060.10 CCS D31 Status 现行 Issue Date 2022-04-15 Implementation 2022-11-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A