High Temperature Ceramic Rollers For Kiln

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Product Description:


1. High temperature
2. Good insulation
3. High strength
4. Precision Process

1) Materials: 50% -99.98% alumina oxide content
2) Application: Used for all kinds of electric heating equipment and electric
Equipment, and textile machinery
3) Good smooth and high strength
4) A variety of specifications available

1. High Mechanical Strength
2. High Thermal Conductivity
3. High Spalling Resistance
4. High Softening Temperature
5. Excellent Insulativity
6. Etching Resistance


Temperature measuring meters
Protection and insulation for thermocouples and thermometers
Furnace tube for resistance furnaces, heat treatment furnaces
Chemical analysis for steel and iron
Various insulationg parts for high temperature resistance and etching resistance

Structure Model:
Round and oval
Mono hole/single bore, double hole/twin bore and multi hole/multi bore

High Purity Alumina Tubes:
1. Extreme high temperature stability under reducing, inert and high vacuum condition under high temperature up to 1800C.
2. Extreme wear and abrasion resistance.
3. Chemical corrosion resistance under high temperature.
4. High dielectric properties.
5. Gas tight for many applications to provide protective atmospheres or high vacuum at high temperature to eliminate contamination or impurity.


Chemical competent







Alkaline matter



2.6 g/cm3


7 M

Water absorption


Rupture  strength


Gas tightness

Kept for ten minutes at negative pressure of 1.3Kpa. The pressure drop is less than 0.3Kpa.

Heat tolerance

Insert the pipe into the furnace at a depth of 20mm. Heat to 1600ºC and maintain for 30 minutes.

Alkali tolerance

In the Na2CO3 solution of 2N concentration, boil for 15 hours with the weight loss not greater than 20mg/dm2.

Volume resistance

>2*10(5) Ω·cm/1300ºC

Breakdown voltage


Expansion coefficient


Temperature for use

Long-term: 1400ºC  Short-term: 1600ºC

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