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The alumina tube is a ideal wear-resistance material for delivering the sand、mine、ash dregs and molten aluminium ,has excellent conductivity、high machinery strength and high-temperature resistance,can resist to the acid、high temperature、corridion and static electricity.

The alumina tube has excellent conductivity、high machinery strength and high-temperature resistance. The big diameter alumina tube is typed by HIP..The materials can resist to the acid、high temperature、corridion and static electricity.The alumina tube is widely used in the electronic industry、minery industry、metally industry、chemistry industry and so on.The alumina tube is a ideal wear-resistance material for delivering the sand、mine、ash dregs and molten aluminium。We can produce the almina tube with different sizes according to the customers’ enquirements.
AL2O3(%) 92-96.5 98.2-99.5 
Density:(g/cm3) ≥ 3.65 3.86 
Linear expansion coefficient:（×10-6℃）（25-800℃） 6.2-7.6 7.8-8.3 
Thermal conductivity:（w/m.K） 21 33 
Dielectric strength（KV/mm） 15 19 
Volume resistivity（Ω。cm）100℃ ＞ 1015 1016 
Water absorption:（%）< 0.05 0.002 
Compressive strength (MPa) ≥ 500 620 
Bending strength(MPa) ≥ 510 610 
Refractoriness （℃）≥ 2000 2030 
Highest service temperature:(℃) ≥ 1600 1700