... finishing, the tolerances up to +/- 0.01mm.), high hardness , insulation, wear-resistant, high temperature-resistant, hot and cold shock-resistant. ... 0.2 allowance1400 degree Celsius 0.2 allowance8Bonding in high temperature 1700 degree Celsius non-caked1600 degree Celsius non ... 3 times not cracked15Maximum service temperaturedegree Celsius190018001400 99.8 high pure Alumina Ceramic tube (ISO9001)