Home / Standards / GB/T 31245-2014 GB/T 31245-2014 Abolished Ready-mixed mortar terminology 预拌砂浆术语 Standard Type GBT ICS 91.100.10 CCS Q13 Status 废止 Issue Date 2014-12-05 Implementation 2015-06-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A