High chemical purity, high temperature resistance, low coefficient of thermal expansion, tight tolerance dimensions, appearance of gas bubble, air line is very little.
Semiconductor grade high purity quartz sand is used in the production of standard semiconductor grade quartz tubes, quartz rods, quartz crucibles and superconductor grade quartz tubes and quartz rods.
It is used for most of the ultraviolet filtering lamps such as ultraviolet tungsten halogen lamp, ultraviolet mercury lamp, metal halide lamp and ultraviolet sleeve tube.
It is a kind of doped transparent quartz tube that absorbs part of UV-C and has a high transmittance
(typical transmittance > 88%) at 254nn in the ultraviolet region, which can satisfy lamp special requirements at the ultraviolet region.
Solar grade quartz tubes are widely used in monocrystalline silicon growth, silicon wafer oxidation and diffusion process in solar warfer manufacturing.