High alumina brick

High alumina brick: Special and standard shape ISO certified manufacturer Stable quality, competitive price High alumina brick with the following specifications: ItemIndexLZ-75LZ-65LZ-55LZ-48Al2O3 ,%≥75≥65≥55≥48Refractoriness≥1790≥1790≥1770≥1750Refractoriness under Load≥1520≥1500≥1470≥1420Permanent Linear Change1500 °C,2h+0.1-0.4-1450 °C,4h-+0.1-0.4Apparent Porosity %≤22≤23≤22≤22Cold crushing strength MPa≥58≥50≥46≥42 ISO9001 certifiedmanufacturer,more than 20 years rich experience. Stable quality , competitive price and exellent service. Standard size, shape and special size and shape according to client's instructions.