Home / Standards / GB/T 3995 GB/T 3995 Active High-alumina insulating refractory bricks 高铝质隔热耐火砖 Standard Type GBT ICS 81.08 CCS Q45 Status 现行 Issue Date 2016-03-04 Implementation 2015-02-01 Responsible Dept N/A Drafting Unit N/A