... / large milky quartz tube,opaque quartz tube,milky quartz/ quartz heating tubes,milky quartz tube,infrared heater tube/ red quartz tube ... low OH, etc. They’re the best heat resisting material for lamps like: halogen lamps, mercury lamps, metal halide lamps, etc ... 800- 2400mm. Exhaust tubes with good CPK and are suitable for high-speed streamline producing. We also can apply some further ...