Home / Standards / GB/T 28415-2012 GB/T 28415-2012 Abolished Fire-resistant structural steel plate and strip 耐火结构用钢板及钢带 Standard Type GBT ICS 77.140.50 CCS H46 Status 废止 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