If you are looking for customized and cheap high alumina mullite insulating brick made in China from a high alumina mullite insulating brick factory, Zibo Qunhui Refractory Co.,Ltd is always at your service.insulating brick  Description:We supply several grades of mullite insulating brick for use in applications from 1260°C to 1760°C.Each grade of brick is formulated to meet specific thermal and physical requirements.After firing each brick is machined to close dimensional tolerances.Insulating bricks are manufactured utilising exceptionally high purity clays and other ceramic materials.The carefully graded organics which are used during the manufacturing process burn out during firing to give a uniform pore structure.Specifications:JM serisesItemJM23JM26JM28JM30AL2O3(%)38-4450-5865-7070-73Fe2O3(%)1.00.90.80.7Classification Temperature (°C)1350143015401600Bulk Density (g/cm3)0.8-10.8-10.8-10.8-1Reheating Linear Change (%)CT-30 °CX 8H1250°C-0.51400°C-0.51500°C-0.51550°C-0.5Cold Crushing Strength (Mpa)2.0-3.52.0-3.52.0-3.52.0-3.5Modulus of Rupture (Mpa)1.51.71.82.0Thermal conductivity400°C(W/m.k)0.250.270.320.41Thermal Expansion1000°C(%)0.50.70.80.9B C serises:ItemB-1C-1C-2AL2O3(%)25-3035-4045-50Fe2O3(%)211Classification Temperature (°C)100013001400Bulk Density (g/cm3)0.8-10.8-10.8-1Cold Crushing Strength (Mpa)2-2.52.5-3.53.0-4.5Thermal conductivity400°C(W/m.k)0.170.230.25Features:1. High insulating properties2. Strong compressive strength3. Low heat storage4. High purity5. Tight dimensional tolerance6. Energy saving7. Low impuritiesApplications:1. Primary hot face linings2. Back-up insulation for furnaces and kilns3. Flue insulation4. Sulphur recovery equipment5. Hot blast stovesCompetitive Advantage:1.Best price, make the products competitive in your market2.Abundant Experience.3.Lighter weight,Low thermal conductivity,low impurities.4.High insulating properties,high CCS and exact tolerance.5.Strict Quality Control. Meet clients'quality requirement.6.Large stocks. Guarantee prompt delivery.7.Safty packing,prompt delivery time,and excellent after-sales services.8.Professional Packing. Avoid damage and secure the goods in transportation