Home / Standards / GB/T 2275-2007 GB/T 2275-2007 Abolished Magnesia and magnesia-alumina refractory bricks 镁砖和镁铝砖 Standard Type GBT ICS 81.080 CCS Q43 Status 废止 Issue Date 2007-10-25 Implementation 2008-04-01 Responsible Dept 国家标准委 Drafting Unit N/A