Description

*9.7% alumina ceramic tubes, rods and various industrial ceramic parts, which are mainly used in thermalcouple temperature, liquid steel continous temperature, various industrial furnace(containing vacuum furnace, carburizing furnace, wire furnace, atmosphere furnace etc), especially widely used in petrochemical, spinning, electric, instrumentation, mechanical workout, military project etc industry. 1. Protecting tube OD 4 5 6 6.*5 8 9.**5 *0 *2 *2.7 *3 *4 *5 *6 ID 2.5 3 4 4.8 5~6 6.*5 6~7 8~9 9.**5 8~9 *0 *0~*1 *0~*2 L *0~**0 *0~**0 *0~**0 *0~**0 *0~**5 *0~***0 *0~***0 OD *7 *7.*5 *8 *9 *9.*5 *0 *2 *4 *5 *6 *7 *0 ID *2~*3 *1.**5~*3 *2~*4 *5 *2.7 *5 *7 *8 *9 *0 *0 *3 L *0~***0 2. Insulator Shape Single bore Twin pore OD 1 1.5 2 3 4 5 6 8 1 1.6 2 3 Bore 0.5 0.6 1 2 2 3 4 5 0.2 0.3 0.5 0.7 L *0~***0 Shape Twin bore Four bore OD 4 5 6 8 *2 1.6 2.5 3 4 6 8 *0 *2 Bore 1 1.2 1.5 2 4 0.*5 0.5 0.5 0.8 1.5 2 2 3.5 L *0~***0 3. Furnace tube OD *5~*0 *1~*0 *1~*0 *1~*0 *1~*0 *1~*0 *1~*0 *1~**0 ID *9~*3 *4~*2 *3~*0 *1~*0 *1~*0 *1~*0 *1~*0 *1~*0 L **0~***0 1. Main performance index Serial number performance index Measuring unit High purity alumina Alumina High alumina 1 Al2O3 % *9.7 *9.3 *5 2 SiO2 % less than0.1 _ _ 3 Density g/cm3 3.*5 3.*8 3.2 4 Wter absorption % 0 0.*1 0.2 5 Cld compressive strength MPa **0 **0 **0 6 *0 degree Celsius leak rates Torr/L. Sec less than****1 less than****1 less than****1 7 Twisting in high temperature mm ***0 degree Celsius 0.2 allowance ***0 degree Celsius 0.2 allowance ***0 degree Celsius 0.2 allowance 8 Bonding in high temperature ***0 degree Celsius non-caked ***0 degree Celsius non-caked ***0 degree Celsius non-caked 9 *0_***0 degree Celsius coefficient of