Home / Standards / GB/T 11945-1999 GB/T 11945-1999 Abolished Autoclaved lime-sand brick 蒸压灰砂砖 Standard Type GBT ICS 91.100.20 CCS Q15 Status 废止 Issue Date 1999-07-30 Implementation 2000-02-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A