... LUYANG mullite brick is compressed in vacuum and sintered under high temperature. Application Lining and back lining of various furnaces in ... stove,heating furnace, tunnel kiln,shuttle kiln,glass-pool kiln,tec Standard SpecificationGrade: 23,26,28,30Classification temperature:1300/1400/1500/1550/1600Size ... . For more information,please contact us ! Insulating Firebrick ( high temperature insulation)