... bar,U quartz tube,U figure quartz glass tube,U shape quartz glass tube,Infrared quartz glass tube,infrared quartz tube,red quartz glass tube,red glass tube ... low OH, etc. They’re the best heat resisting material for lamps like: halogen lamps, mercury lamps, metal halide lamps, ... 800- 2400mm. Exhaust tubes with good CPK and are suitable for high-speed streamline producing. We also can apply some further ...