Home / Standards / GB/T 18840-2018 GB/T 18840-2018 Active Inlay for bituminous waterproof sheets 沥青防水卷材用胎基 Standard Type GBT ICS 91.120.30 CCS Q17 Status 现行 Issue Date 2018-12-28 Implementation 2019-11-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A