Quarld quartz glass tube are available of electrically fused type and flame fused type. Electrically fused quartz tube are EN09, EN07. EN09 is low cost quartz which is mainly used as halogen lamps bulb and high pressure mercury vapor lamps bulb. EN07 is of high purity grade which is mainly used as critical lamps and semiconductor application. Also UV cut quartz tube which is cerdium doped and ozone free quartz tube which is titanium doped are available. Ruby quartz tube and opaque quartz tube are also available.

Flame fused quartz tube type FN07 and FN08 are available with very excellent visual quality such as nearly no bubble.