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Protection Pipe and Insulating Pipe of Alumina(Al2O3)
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  • Key Features


       High Mechanical Strength             High Thermal Conductivity

       High Spalling Resistance               High Softening Temperature

       Excellent Insulativity      Etching Resistance


    Applications


       Temperature Measuring Meters               Protection and Insulation for Thermocouples, Thermometers

       Chemical Analysis for Steel, Iron             High Softening Temperature

       Furnace Tube for Resistance Furnaces, Heat Treatment Furnaces

       Various Insulating Parts for High Temperature resistance and Etching Resistance


    Structure Model


       Round, Oval

       Mono-hole, Double-hole, Multi-hole

       Threaded

       Rhombohedral


  • Protection Pipe and Insulating Pipe of Alumina (Al2O3)


    Characteristics of Material

    Technical Parameters
    		 Unit Value
    High Alumina Corundum

    Al2O3 Content

    		%

    85

    99 ~ 99.5

    SiO2 Content

    		 % 12 0.2

    Fe2O3 Content

    		 % 0.2 0.05 ~ 0.1
    Mohs Hardness
    		  7 8 ~ 9

    Bulk Density

    Injection Molding
    		g/cm3 3.5 ~ 3.6 3.7 ~ 3.9
    Extrusion Molding
    		3.4 ~ 3.5 3.7 ~ 3.8
    Hot-press Molding
    		3.4 ~ 3.5 3.7 ~ 3.85

    Water Absorption

    		% < 0.2 0.1 ~ 0.2

    Bending Strength

    Injection Molding
    		 MPa 180 200
    Hot-press Molding
    		 140 150
    Operating Temperature
    		 ℃

    Long term 1450

    Short term 1600

    		Long term 1600

    Max. Operating Temperature

    		 ℃ 1600 1800

    Dimensions of Insulating Pipes of High Alumina and Corundum Ceramic


    Unit: mm

    Hole Nos
    		 Values
    O.D L.D Length

    Mono-hole

    		1 ~ 15 0.5 ~ 10 5 ~ 1000

    Double-hole

    		 2 ~ 15 0.5 ~ 4 5 ~ 2000

    Flat Double-hole

    		 3 × 5 ~ 7 × 12 0.5 ~ 5 5 ~ 2000
    Four-hole
    		 4 ~ 15 0.5 ~ 4 5 ~ 2000

    Dimensions of Ceramic Protection Pipes for Thermocouples


    Unit: mm

    Items
    		 Values

    O.D

    		 6 8 10 12 16 20 25

    L.D

    		 4 6 7 8 12 15 19

    Length

    		 100 ~ 2165

         Products of other specifications can be produced according to customers' requirements.

  • Protection Pipe and Insulating Pipe of Alumina (Al2O3)
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    Protection Pipe and Insulating Pipe of Alumina Spec Sheet 236 KB