I-Alomina Ceramic Tube / umbhobho / i-rod / roller
Product Introduction

About alumina oxide ceramic

The Vacuum furnace tube could resist 99% high temperature, abrasion, acid and alkali resistant, high strength and good toughness. 

Products are widely used in electric appliances, mines, coal, industry, machinery, boilers, aerospace, electronics and other fields.

Alumina oxide ceramic can be made into the following products:
1. 99% porcelain tubes and military accessories.
2. Corundum high aluminum tube.
3. Wear resistance of alumina ceramic bushing.
4. Precision tube for electrical ceramics and appliances.etc.

1. High temperature resistance
Porous alumina tube has a high melting point (up to 1750 degrees Celsius) and a high boiling point.
2. Corrosion resistance
It can be used under strong acids, strong bases, inorganic, organic salts, etc.
3. Anti-magnetic
Because the material is non-magnetic, it does not absorb dust and reduces surface flaking.
4. Electrical insulation
Insulator at room temperature, high resistivity, can be used in equipment that requires insulation.

Material Data. Sheet

GeneralPropertyUnits99.5% alumina99% alumina95% alumina


Water absorption%000
Flexural strengthMpa≥379≥338≥320
Compressive strengthMpa≥2240≥2240≥2000
Fracture toughnessMpa m 1/24-54-53-4


Max. service
CTE (20-800℃)1×10 -6 /℃6.5~8.06.2~8.05.0~8.0
Thermal shockT(℃)≥250≥200≥220
Thermal conductivity (25℃ )W/m.k302924
Specific heat1 x 10 3 J/(kg·K)0.780.780.78


Volume resistivity (25℃ )ohm.cm>1 x 10 14>1 x 10 14>1 x 10 14
Insulation strengthKV/mm191818
Dielectric constant (1Mhz)(E)

Product Information
50%, 75%, 85%, 95%, 99% Al2O3
Alumina ceramic
Wooden box
Iinkcukacha zemveliso

Factory Pictures
Company Advantages
History:We are a company combined with R&D, production and sales wholly,
Packing:Packing in export wooden cases is strictly adopted
Quality:We have passed IS0 9001:2005. standard, stable,reliable
Price:Our products compare favorably with other traders.
Why us?
* Professional manufacturer since 1997.
* Strict quality control on production process and tolerance.
* Free samples available
* Customized production based on your drawing or specification
* On-time delivery and reliable support and service
* Inventory available for quick shipment
* We keep confidentiality of all the drawings and business information between us.
Are you a trading company or a manufacturer?
* We are a manufaturer. 
Can you provide the free samples?
* Ewe, sinokunika isampula yasimahla ukuba sinayo kwisitokhwe, kodwa intlawulo yekhuriya iya kuqokelelwa.
Ngaba uyayamkela imveliso eyenzelwe ngokwesiko isekelwe kwinkcazo yethu?
* Ewe, sinikezela nge-OEM kunye nenkonzo ye-ODM. Sithumele nje umzobo wakho ukuba unayo. Ukuba awunayo umzobo, usixelele umbono wakho, siya kukusebenzela umzobo.
Lithini ixesha lokuhanjiswa?
* Iintsuku ezisi-7 zomsebenzi kwiimveliso ezisemgangathweni iintsuku ezingama-30 zemveliso eyenziwe ngokwezifiso.

Ulwazi olusisiseko
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  • Ilizwe / Ingingqi
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  • Iimveliso eziphambili
  • Ishishini lomntu osemthethweni
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Contact Us
Take advantage of our unrivaled knowledge and experience, we offer you the best customization service.

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The first thing we do is meeting with our clients and talk through their goals on a future project.
During this meeting, feel free to communicate your ideas and ask lots of questions.
They are all manufactured according to the strictest international standards. Our products have received favor from both domestic and foreign markets.
They are now widely exporting to 200 countries.
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