China High Temperature Heat Resistance Alumina Ceramic Al2O3 Tube

High Temperature Heat Resistance Alumina Ceramic Al2O3 Tube
Description
The main material of alumina ceramic tube is Aluminium Oxide( Al2O3). The purity varies from 60%-99.7%, density from 3.0-3.9g/cm3, and working temperature from 1000-1700ºC. It offers a combination of superior mechanical strength and electrical properties, wear resistance and corrosion resistance.

Features and advantage
Great mechanical strength
Low thermal conductivity
High heat resistance
High softening temperature
Small thermal expansion coefficient
Good cold-resistance heat-resistance
Resistance to acid and alkali corrosion
Long service life

Technical Index

AL2O3% CompositionDensity
(g/cm3)Flexural Strength
(MPa)Thermal Conductivity
[w/(m.R)]Dielectric Strength
(KV/mm)Working Temp.603.020516101000°C753.128017101250°C803.3215.717101290°C853.423017101350°C923.631218101390°C953.730420101480°C993.8134034101600°C99.73.8537035101700°C

There are 3 categories accorind to Alumina content and features: Common ceramic pipe, Al2O3<75%; High Alumina ceramic pipe, Al2O3 75%-90%; Corundum pipe:Al2O3>90%.
After comparison,their features are as below:

alumina ceramic tube Technical Index compairson

Al2O3 content
%70-75859599.7Density
(g/cm3)3.03.43.73.9Bending Strength
(Mpa)85N/MM2300364450 Expansion
(X10-6/°C)(25-800°C)677.68Thermal Conductivity
(W/(m.R))17182035Dielectric Strength
(kv/mm)9101112Working Temperature
°C (Long time use)1300140016001750Water Absorption
%5<0.2<0.2<0.1-0.2

In order to decrease cost, Al2O3 roller also can be used as ceramic pipe after cutting under certain condition , they are low cost and has accurate size.
Ceramic tube physical and chemical properties

CharacteristicsItemsTypesVS-2000S-2000S-4000S-6000Physical
propertiesBulk density(g/cm3)≥2.4≥2.4≥2.6≥2.8Apparent porosity(%)20-2320-2515-2010-15Water absorption(%)8-108-127-104-7Bending strength
(25ºC/1350ºC,Mpa)>55/35>50/30>60/50>70/60Thermal expansion coefficient
(*10(-6)/ ºC)(25~1000ºC)5.8-6.05.8-6.25.8-6.25.8-6.0Thermal shock resistance(1300~25ºC)GoodVery goodVery goodGoodWorking Temp(ºC)≤1200≤1230≤1300≤1350CompositionAl2O3(5)74-7674-7672-7478-80SiO2(%)20-2220-2219-2114-16Fe2O3(%)≤0.3≤0.3≤0.3≤0.2Reference
loadingΦ50*3800mm5.0
(1200ºC)4.5
(1230ºC)6.0
(1300ºC)7.5
(1350ºC)

Pictures of alumina ceramic tube
Application:
1.Through pipe:
Inner liner tube and heating tube in electric furnace, heat treatment furnace and toughened furnace, chlorine pipe for production of alchlor and electric heating pipe in the tin trough in the production line of float glass.

2. Protector pipe:
Protector tube of thermocouple() and thermometer(), carbon determinator ()and combustion pipe() of metallurgy, iron and steel, chemical analysis.

3.Insulation pipe
Interval and insulation for wires of thermocouple. For specifications, there are single hole, double holes, four holes and multi-holes. For form, there are round and oval pipes.

Packaing&Shipping
Package: wooden case.
We also provide OEM service, the package can be designed according to your requirements.
Shipping: By vessel or by train from any Chinese port, Samples can be delivered by International express.

Our Service:

1. Timely response,
Timely response to your inquiry, multiple choice recommendations based on your demand, quickly respond mails and provide solutions.

2. Sample evaluation
Sample and trial order is accepted for the quality evaluation.

3. Strict quality control
Arrange production on time and control quality strictly.

4. Shorter delivery time.
Book the earliest vessel or plane to guarantee the delivery time.

5. Professional Services
Provide all the detailed news and pictures from order to delivery;
Offer relative export documents and original certificate if needed;
Warm and considerable after-sale service

Company Information
DKJL refractories exporting company is one of the most professional suppliers of refractories in China. Our main products are refractory and thermal insulation materials, heating elements, and industrial ceramics. They are available in various sizes and shapes. Our products enjoy a good reputation for their excellent quality and service in domestic and international markets.



FAQ:
1.How can I get your prompt quotation?
We can give you reply with quotation quickly if you kindly send the inquiry with following factors: working temperature, content of AL2O3, dimension (diameter*thickness* length), application and quantity.

2.What's the MOQ of the order?
No limit, we can offer the best suggestions and solutions according to your condition.

3. Which payment terms can you accept?
T/T,LC,Western Union,moneygram are available for us.

4. After an order is placed, when to delivery?
15-25days after confirming the order.
5. Does your company accept customization?
We accept OEM service.
6. How to solve the quality problems?
If the products don't conform to customer's samples or have quality problems, our company will be responsible to make compensation for it based on enough evidence.

7. What is the HS code?
The HS code is 69060000

8. How can I contact you?