... 99% 3. Density:1.80--1.95g/cm3 4. ISO 9000 certificate 5. Roller kiln Product Introduction : Rollers,also be ... bubbles and other defects Product Application: Fused Silica Rollers can used in glass tempered furnace, floating method glass kiln ,floating ... , mixing bar, material basin, rotating tube, radar antenna cover, widely used in spacecraft, rocket, missile, radar, Atomic Energy, electronic, steel, ...