Home / Standards / GB/T 37622-2019 GB/T 37622-2019 Active Hot rolled steel bar of fire resistant for the reinforcement of concrete 钢筋混凝土用热轧耐火钢筋 Standard Type GBT ICS 77.140.60 CCS H44 Status 现行 Issue Date 2019-06-04 Implementation 2020-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A