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Product Name: 4-Hole High Purity 99% Alumina Ceramic Pipe Model NO.: GT-0271 Temper: No Need Alloy: Non-alloy Grade: 1000 Series Surface Treatment: Brushed Shape: Round Trademark: SHANGTAO Transport Package: Plywood Case Specification: RoHS Origin: Shanghai HS Code: 8547100000 Product Description Gongtao companymainly produce alumina tubes, rods and various industrial ceramic parts, which are mainly used in thermalcouple temperature, liquid steel continous temperature, various industrial furnace(containig vacuum furnace, carburizing furnace, wire furnace, atmosphere furnace etc), especially widely used in petrochemical, spinning, electric, instrumentation, mechanical workout, military project etc industry.Sillimatin 60 Type C 530, Alsint 99.7 Type C 799 and Pythagoras Type C 610, all complying with DIN VDE 0335.The main applications are in the area of thermal processes. Protection tubes, insulators, radiant tubes, support tubes for electric heaters, beams, profiles, incineration aids and special fabrications.The Impervious Materials are:Alsint(Re-crystallised Alumina) is rated to 1700oCPythagoras(Aluminous Porcelain) is rated to 1400oCThe Porous Material is:Sillimantin 60 and is rated at 1350oCSillimantin has better thermal shock resistance and is used mainly in furnace tubes, however can be used as an outer protection sheath if thermal shock is critical.Our items are various and exported to many countries.Welcome to contact us!Specification:DimensionOuter dia. mmInner dia.mmLength mmRemarkItemThermocouple protection tube7-1201-11010-2000If you need others,we cancustomize for you.Insulated tubeSingle hole2-1201-11010-2000(inner core)Double holes1-100.4-210-2000Four holes2-100.5-210-2000Property of material:Material85Al2o390Al2o395Al2o399Al2o3Al2o385%90%93%99.30%Fe2o3≤1.0≤0.5≤0.5≤0.3Desnsity: g/cm33.43.53.63.85VickersHardness≥8.6≥8.899WaterAbsorption:%≤0.2≤0.1≤0.085≤0.01Refractoriness:°C1580°C1600°C1650°C1800°CFlexuralStrength:Mpa180200240280WearRate(atroomtemperature,erosion,100grinding)%≤3≤2.5≤1≤0.5Other information:FeatureApplicationMain usage1.GreatmechanicalstrengthElectric appliance industry Automotive industry1.Heattreatmentfurnaceandtoughenedfurnace2.Highsofteningtemperature3.Goodresistancetothermalimpact4.SmallthermalexpansioncoefficientMechanical industry Engineer industry2.Innerlinertubeandheatingtubeinelectricfurnace5.Goodchillandabruptheatproperties6.Resistancetoacidandalkalicorrosion