Home / Standards / GB/T 28415 GB/T 28415 Active Fire-resistant structural steel plate,sheet and strip 耐火结构用钢板和钢带 Standard Type GBT ICS 77.140.50 CCS H46 Status 现行 Issue Date 2023-08-06 Implementation 2024-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会