Home/Alumina Tubes
95% 99% 99.7% Alumina Material
Alumina materials vary from 95%, 99% to 99.7% alumina. Resisting temperature from 1500℃ to 1650℃.
Customized Shapes and Slots
Insulating tubes for mounting thermocouple wires can be manufactured. They are available in round or oval shapes, with the option of inserted slots.
Large Stock With Various Sizes
We produce a large quantity of stock alumina tubes with a variety of sizes. Fast delivery within 7 days. Find us if you need alumina tubes at urgent situation.
Customized Machining To Precised Measurement
Tubes can be produced according to customer's drawing. By precesion machining, outer and inner diameters can be accurate, as well as required roughness.
Aluminum Oxide Alumina Tubes
Unipretec offers an extensive selection of alumina ceramic tubes in a variety of shapes, materials, and manufacturing processes, including those designed specifically for unique applications. Whether for use in the chemical industry, laboratories, electronics and electrical engineering, environmental technology, or foundry technology, Unipretec's skilled team designs and optimizes ceramic tubes for various processes and applications.
Ceramic Protection and Insulating Tubes
Technical ceramics are ideal for protection and insulation tubes due to their outstanding chemical resistance, high temperature resistance, and electrical insulating properties. As a result, these tubes find extensive use in applications like thermocouples, resistance thermometers, and special uses in extreme environments such as high-temperature processes or aggressive chemical media.
Unipretec's ceramic protection tubes and insulating tubes are employed in the production of temperature measuring and control devices. The superior quality of Unipretec's products is due to their resistance to aggressive atmospheres, even under the most demanding conditions where temperatures can reach 1,700°C. The alumina ceramics utilized, including those composed of 99.5% or 95% Al2O3, stand out for their remarkable electrical insulation and great mechanical strength.
Ceramic Furnace Tubes
Unipretec has substantial stocks of ceramic furnace tubes. Our alumina tubes find extensive use in furnace and kiln applications. They are also frequently used in many other applications. The furnace tubes absorb heat from the exterior, while the working environment is contained within the ceramic tube's interior.
When an atmosphere or internal pressure exists in the furnace, dense products are necessary. For these kinds of applications, alumina tubes or Mullite tubes would be suitable options. Dense Alumina or Mullite furnace tubes are more susceptible to thermal shock than porous versions, thus the heating rate must be carefully monitored to avoid cracking.
Our ceramic tubes are widely used as furnace tubes in harsh working conditions, such as in various laboratory or analysis furnaces. In these situations, the tubes are usually made of dense mullite or 99% alumina.
Precised Machining Ceramic Tube
Additionally, alumina ceramic tubes can be formed through dry pressing or isostatic pressing, and then processing to achieve accurate outer and inner diameters, as well as required roughness. Precise tolerances allow ceramic tubes to fit perfectly into mechanical equipment. Usually alumina tubes are available as：
Heating element supports
Temperature measurement
Kiln furniture
Vacuum furnace components
Electrical insulators
Lead through tubes
Pump plunger liner
Piston for high pressure washer pump
Advantages
Precise dimensional tolerances
Chemical resistance
High-temperature resistance
Thermal shock resistance
Our Products
Aluminum Oxide Tube properties
Our certificate
Contact us
No.153, Yuehua Road, Huli District, Xiamen, China
info@unipretec.com
+86 18650119402