... life milky infrared quartz tube heater SiO2>99.9% Detail dimension of electric quartz heater tube : TypeVoltagePowerLengthODHeating wireXD- ... QB300W-600W400-600mm13mm Physical Properties of electric quartz heater tube OpalescenceSiO2Heat ResistanceThe opaque quartz tube transmitting ... life, with SGS, RoHs approved8. Widely used in infrared heater, cooking, oven, stove, baker, painting dryer, drying ...