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STA universe group CO .,LTD can specialize in alumina tube, ceramic tubes, rods and various industrial ceramic parts, which are mainly used in thermal-couple temperature, liquid steel continuos temperature, various industrial furnace, especially widely used in petrochemical, spinning, electric, instrumentation, mechanical workout, military project etc industry.
We mainly produce alumina ceramic tubes, rods and alumina ceramic thermocouple protection tube, alumina ceramic insulator or insulation tube.
We can produce 85%,90%, 95%,99.5-99.7% ceramic tubes and insulated tubes.
Material | 85 Al2o3 | 90 Al2o3 | 95 Al2o3 | 99.7 Al2o3 |
Al2o3 | 85% | 90% | 93% | 99.30% |
Fe2o3 | ≤ 1.0 | ≤ 0.5 | ≤ 0.5 | ≤ 0.3 |
Desnsity: g / cm3 | 3.4 | 3.5 | 3.6 | 3.85 |
Vickers Hardness | ≥ 8.6 | ≥ 8.8 | 9 | 9 |
Water Absorption:% | ≤ 0.2 | ≤ 0.1 | ≤ 0.085 | ≤ 0.01 |
Refractoriness:°C | 1580 °C | 1600 °C | 1650 °C | 1800°C |
Flexural Strength:Mpa | 180 | 200 | 240 | 280 |
Wear Rate( at room temperature, erosion, 100 grinding)% | ≤ 3 | ≤ 2.5 | ≤ 1 | ≤ 0.5 |
Industrial Alumina and Mullite Ceramic Insulators Tube
Features:
1) A variety of specifications available.
2) Satisfy various technical request
3) Lower medium spoilage
4) Good insulation performance and high temperature resistance
5) Stiffness texture
6) Used in all electric products and electric heating products.
Some technical parmeters of al2o3 protection tube , Alumina and Mullite Ceramic Insulators Tube as below :
Dimension | Outer dia. mm | Inner dia.mm | Length mm | Remark | |
Item | |||||
Thermocouple protection tube or furnace ceramic tube | 7-120 | 1-110 | 10-2000 | If you need others,we can customize for you. | |
Insulated tube | Single hole | 2-120 | 1-110 | 10-2000 | |
(inner core) | Double holes | 1-10 | 0.4-2 | 10-2000 | |
| Four holes | 2-10 | 0.5-2 | 10-2000 | |

Main application:
| Feature | Application | Main usage |
| 1.Great mechanical strength | Electric appliance industry Automotive industry | 1.Heat treatment furnace and toughened furnace |
| 2.High softening temperature | ||
3.Good resistance to thermal impact | ||
4.Small thermal expansion coefficient | Mechanical industry Engineer industry | 2.Inner liner tube and heating tube in electric furnace |
5.Good chill and abrupt heat properties | ||
| 6. Resistance to acid and alkali corrosion |
Ceramic alumina tube widely used in the high corrosive and high-temperature environment like thermal power.
1.) Kiln furniture
2.) Furnace work tubes
3.) Vacuum furnace parts
4.) Electrical insulators
5.) Heating element supports
6.) Temperature measurement
We can supply the products according to customer's drawings , dimension and performance requirement.
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Polythene-foamed sheet bag and wooden case and wooden pallet or pack as customer’s requirements.
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You can contact our trade manager at any time. Your problems can be responsed in 12 hours can we will give you solutions in 24 hours. Also if there’s any problem about our products’ quality, we accept resending them again. Thank you.
Why STA:
1. We are a manufacturer, which can control the cost easiler than trade company also can give you anwer more quickly.
2. As a manufacturer, we know much in technique and can give you more support in technique problem.
3.Our products are complete in specifications with various of sizes.
4.We enjoy a good reputation in the customers in domestic and overseas markets.
Our factory can according to your need to customize different type required.
If you have any questions or new need of them, pls contact me at any time. The more information will be sent to you, thanks in advance.
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