Home / Standards / GB/T 2994-2021 GB/T 2994-2021 Active High alumina refractory mortars 高铝质耐火泥浆 Standard Type GBT ICS 81.080 CCS Q 46 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 国家标准委 Drafting Unit N/A