Home / Standards / GB/T 26537-2011 GB/T 26537-2011 Active Steet fiber reinforced concrete manhole cover 钢纤维混凝土检查井盖 Standard Type GBT ICS 91.100.40 CCS Q14 Status 现行 Issue Date 2011-06-16 Implementation 2012-04-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A