Home / Standards / GB/T 28299-2012 GB/T 28299-2012 Active Hot-rolled flange plate for construction 结构用热轧翼板钢 Standard Type GBT ICS 77.140.50 CCS H46 Status 现行 Issue Date 2012-05-11 Implementation 2013-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会