Glass plate inspection, the appearance of the quality is mainly to check the flatness, observe the presence of bubbles, inclusions, scratches, lines and fog and other quality defects, the existence of such defects in the glass, in use will be deformed, Transparency, mechanical strength and glass thermal stability, engineering should not be used. As the quartz glass is a transparent object, in the selection by visual inspection, the basic can identify the quality of good or bad.

Glass processing products inspection, in addition to the requirements of flat glass testing, but also test the quality of their processing, testing specifications size standards, processing accuracy and pattern clarity and so on to meet the requirements, while the edge is not allowed to be incomplete.

The appearance quality of the hollow glass tiles is not allowed to crack, and the opaque unmelted material is not allowed in the glass body. It is not permissible to weld and glue between the two vitreous bodies. Visual inspection of brick body should not have ripples, bubbles and glass body in the uneven formation of the layered stripes. Glass tile surface should be less than 1 mm, convex should be less than 2 mm, the weight should meet the quality standards, no surface warping and notch, burr and other quality defects, the angle to Founder.