... -QB300W-600W400-600mm13mm Physical Properties of clear quartz glass coil tube OpalescenceSiO2Heat ResistanceThe opaque quartz tube transmitting ... water 3 times, no crack. Opaque/Milky quartz glass propertyDensity1.92*103kg/m3Compression Strength>1.0*109Pa( ... heater, cooking, oven, stove, baker, painting dryer, drying apparatus, dyeing, print, printer, copy machine, projector, sterilizing device, ...