Home / Standards / GB 1344-1999 GB 1344-1999 Abolished Portland blastfurnace-slag cement，Portland pozzolana cement and portland fly-ash cement 矿渣硅酸盐水泥、火山灰质硅酸盐水泥及粉煤灰硅酸盐水泥 Standard Type GB ICS 91.100.10 CCS Q11 Status 废止 Issue Date 1999-07-30 Implementation 1999-12-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A