한국어
- Place of Origin:CN
- Type:Ceramic Tubes
- Application:Industrial Ceramic
- Material:Alumina Ceramic
- Model Number:As your requirement
- Brand Name:DKJL
High working temperature 99 al2o3 alumina ceramic furnace tubes
The main material of ceramic pipe is Aluminium Oxide( Al2O3). The purity varies from 60%-99.7%, density from 3.0-3.9g/cm3 and working temperature from 1000-1700°C. It offers a combination of superior mechanical strength and electrical properties, wear resistance and corrosion resistance.
ceramic tube's Features and advantages
1.Great mechanical strength
2.Low thermal conductivity
3.High heat resistance
4.High softening temperature
5.Small thermal expansion coefficient
6.Good cold-resistance heat-resistance
7.Resistance to acid and alkali corrosion
8.Long service life
ceramic tube Technical Index
AL2O3% Composition | Density (g/cm3) | Flexural Strength (MPa) | Thermal Conductivity | Dielectric Strength | Working Temp. |
60 | 3.0 | 205 | 16 | 10 | 1000°C |
75 | 3.1 | 280 | 17 | 10 | 1250°C |
80 | 3.3 | 215.7 | 17 | 10 | 1290°C |
85 | 3.4 | 230 | 17 | 10 | 1350°C |
92 | 3.6 | 312 | 18 | 10 | 1390°C |
95 | 3.7 | 304 | 20 | 10 | 1480°C |
99 | 3.81 | 340 | 34 | 10 | 1600°C |
99.7 | 3.85 | 370 | 35 | 10 | 1700°C |
There are 3 categories according to Alumina content and features:
Common ceramic pipe: Al2O3<75%;
High Alumina ceramic pipe:Al2O3 75%-90%;
Corundum pipe:Al2O3>90%.
Technical Index compairson
Al2O3 content % | 70-75 | 85 | 95 | 99.7 |
Density (g/cm3) | 3.0 | 3.4 | 3.7 | 3.9 |
Bending Strength (Mpa) | 85N/MM2 | 300 | 364 | 450 |
Expansion (X10-6/°C)(25-800°C) | 6 | 7 | 7.6 | 8 |
Thermal Conductivity (W/(m.R)) | 17 | 18 | 20 | 35 |
Dielectric Strength (kv/mm) | 9 | 10 | 11 | 12 |
Working Temperature °C (Long time use) | 1300 | 1400 | 1600 | 1750 |
Water Absorption % | 5 | <0.2 | <0.2 | <0.1-0.2 |
In order to decrease cost, Al2O3 rollers also can be used as ceramic pipe after cutting under certain condition , they are low cost and have accurate size.
Ceramic tube physical and chemical properties
Characteristics | Items | Types | |||
VS-2000 | S-2000 | S-4000 | S-6000 | ||
Physical properties | Bulk density(g/cm3) | ≥2.4 | ≥2.4 | ≥2.6 | ≥2.8 |
Apparent porosity(%) | 20-23 | 20-25 | 15-20 | 10-15 | |
Water absorption(%) | 8-10 | 8-12 | 7-10 | 4-7 | |
Bending strength (25°C/1350°C,Mpa) | >55/35 | >50/30 | >60/50 | >70/60 | |
Thermal expansion coefficient (*10(-6)/°C)(25~1000°C) | 5.8-6.0 | 5.8-6.2 | 5.8-6.2 | 5.8-6.0 | |
Thermal shock resistance(1300~25°C) | Good | Very good | Very good | Good | |
Working Temp(°C) | ≤1200 | ≤1230 | ≤1300 | ≤1350 | |
Composition | Al2O3(5) | 74-76 | 74-76 | 72-74 | 78-80 |
SiO2(%) | 20-22 | 20-22 | 19-21 | 14-16 | |
Fe2O3(%) | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.2 | |
Reference loading | Φ50*3800mm | 5.0 (1200°C) | 4.5 (1230°C) | 6.0 (1300°C) | 7.5 (1350°C) |
Application:
1.Through tube:
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 tube:Protector tube of thermocouple and thermometer, carbon determinator and combustion pipe of metallurgy, iron and steel, chemical analysis.
3.Insulation tube: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 pipe.
pictures of ceramic tube
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.
package pictures of ceramic tube
1.Timely response,
Timely response to your inquiry, multiple choice recommendations based on your demand,quickly respond mails and provide solutions.
2.Free sample
Sample and trial order are 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
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, 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.
1.How can I get your prompt quotation for ceramic tube ?
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 deliver?
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 for it.
7. What is the HS code?
The HS code is 69060000.
8. How can I contact you?
....
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