Home / Standards / GB/T 2272-2020 GB/T 2272-2020 Active Ferrosillicon 硅铁 Standard Type GBT ICS 77.100 CCS H42 Status 现行 Issue Date 2020-06-02 Implementation 2020-10-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A