Home / Standards / GB/T 39147-2020 GB/T 39147-2020 Active Steel fiber for concrete 混凝土用钢纤维 Standard Type GBT ICS 77.140.65 CCS H49 Status 现行 Issue Date 2020-10-11 Implementation 2021-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A