Home / Standards / GB/T 28414-2012 GB/T 28414-2012 Active Structural section steels with improved seismie resistance 抗震结构用型钢 Standard Type GBT ICS 77.140.70 CCS H44 Status 现行 Issue Date 2012-06-29 Implementation 2013-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会