Home / Standards / GB/T 2275-2017 GB/T 2275-2017 Active Magnesia and magnesia-alumina bricks 镁砖和镁铝砖 Standard Type GBT ICS 81.080 CCS Q43 Status 现行 Issue Date 2017-09-07 Implementation 2018-08-01 Responsible Dept 国家标准委 Drafting Unit N/A