Alumina ceramic tube is made of 95% high purity alumina ceramic material.According to customer requirements, we can provide different high-purity alumina ceramic tubes, such as: Alumina ceramic(Al2O3):95%;96%;97%;98%;99%;99.5%:99.7%;99.9%...etc. High heat and temperature resistant for alumina ceramic tubes The High heat temperature alumina tube have a excellent high heat temperature resistant ability. High heat temperature alumina tube can be used under 1800â?? high temperature environment.Coefficient of thermal expansion up to 9* 10â?§6 from 20�°C- 1000�°C. up to 2050�°C Melting point. Corrosion resistant for alumina tubes Corrosion alumina tube material has excellent chemical stability under high temperature, it is not easy to oxidize, and Corrosion alumina tube has good corrosion resistance to acid, alkali and salt.