Quartz flange is a kind of environmental protection quartz material, it has gradually 

replaced other kinds of flange products, such as steel flange and iron flange. The 

reason why it can replace other materials is because of its incomparable advantages. 

Quartz flange is high temperature resistant and joint rigor, no leakage.

Low expansion quartz flange has very low coefficient of thermal expansion, and good 

cold and hot processing performance, it can be made into closed honeycomb structure. 

The preparation technology of low expansion quartz flange is relatively mature, and it 

is widely used in optical engineering, such as the primary mirror blank of Hubble Space 

telescope.

As a special optical material, quartz flange plays an extremely important role in the 

field of aerospace, semiconductor and precision devices. Its performance directly 

restricts the resolution, accuracy, stability and reliability of related equipments.