Home / Standards / GB/T 28900 GB/T 28900 Active Test methods of steel for reinforcement of concrete 钢筋混凝土用钢材试验方法 Standard Type GBT ICS 77.140.60 CCS H44 Status 现行 Issue Date 2022-10-12 Implementation 2022-10-12 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会