Quartz sight tube

Quartz glass is a special type of glass that contains only silicon dioxide as a single component. Due to different types, processes, and raw materials, they are often called silicate glass, quartz glass, fused silica, fused quartz, synthetic fused silica, and transparent, translucent, and opaque quartz with no clear concept. In China, quartz glass is commonly referred to as electric melting transparent quartz glass, continuous melting quartz glass, gas refining transparent quartz glass, synthetic quartz glass, opaque quartz glass, optical quartz glass, semiconductor quartz glass, electric light source quartz glass, etc.