Home / Standards / GB/T 31538-2015 GB/T 31538-2015 Active Grouting pipe embedment for concrete joint waterproofing 混凝土接缝防水用预埋注浆管 Standard Type GBT ICS 91.120.30 CCS Q17 Status 现行 Issue Date 2015-05-15 Implementation 2016-02-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A