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Bubble Alumina Tube

Bubble Alumina Tube

A bubble alumina tube is a type of high-temperature ceramic tube made from a specially formulated alumina material that contains a high volume of small, spherical voids or bubbles. These bubbles help to increase the tube's insulating properties, reduce its weight, and improve its resistance to thermal shock.

Bubble alumina tubes are commonly used in a range of high-temperature applications, including in furnaces, kilns, and incinerators. They are known for their excellent thermal insulation properties, which help to reduce energy consumption and improve process efficiency.

The unique structure of bubble alumina tubes also makes them highly resistant to chemical attack, corrosion, and erosion, making them well-suited for use in harsh environments where other materials would quickly degrade. They are also highly resistant to thermal shock, which helps to prevent cracking and premature failure in high-temperature applications.

Bubble alumina tubes are available in a range of sizes and configurations to meet the specific requirements of different applications. They can be custom designed to include features such as flanges, threads, and mounting brackets, making them easy to install and integrate into existing systems.

Overall, bubble alumina tubes are a highly versatile and effective solution for high-temperature applications that require exceptional insulation, chemical resistance, and thermal shock resistance. Their unique structure and properties make them ideal for use in a range of industries, including ceramics, metals, chemicals, and environmental applications.


Catalog No. CERAMICS
Size Customized
Material Al2O3
Purity 95% 99% 99.7%
Density 3.8~3.9 g/cm3


At CG Material, we offer high quality Bubble Alumina Tube with exceptional purity and precision in terms of size. Our products range in diameter from 1mm to 100mm and have a purity level of up to 99.8%. We also provide custom manufacturing options for special shapes to meet specific needs.

Bubble Alumina Tube Specifications

Color White
Composition (Al2O3), % 99+
Bulk Density, g/cc 0.96
Cold Crush Strength, Mpa (psi) 11 (1600)
Shrinkage, % Average of Length & width
4 hr. at 1750℃ 0.19
4 hr. at 1800℃ 1.77
Specific Heat, Btu/lb ℉(J/kg·K) 0.27


Bubble Alumina Tube Applications

* Structural hot face refractory in high-temperature furnaces and thermal process systems with temperatures to 1825℃.

* Backup insulation in crystal growth furnaces with temperatures in excess of 2000℃.

* Low-mass kiln furniture.

* High-temperature load-bearing insulation.


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.


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