Home / Standards / GB/T 20491-2017 GB/T 20491-2017 Active Steel slag powder used for cement and concrete 用于水泥和混凝土中的钢渣粉 Standard Type GBT ICS 77.140.99 CCS H54 Status 现行 Issue Date 2017-09-07 Implementation 2018-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A