REXI gray glass is a neutral dark glass, which can be absorbed without selectivity for each band of the spectrum. It is a series of gradients from transparent to black.
China gray glass manufacturers mostly use the float process to add a certain amount of manganese oxides, chromium oxides or other metal compounds that produce black appearance for production. In the process Chinese suppliers use metallic tin as the floating medium, and a mixed gas of nitrogen and hydrogen as the protective gas. In the relatively closed environment of tin baths, there are many complex chemical reactions, some of these reaction will bring about many defects, affecting product quality and price.
The environment and structural characteristics of the tin bath determine that defects are inevitable, it can only be effectively controlled in actual production and cannot be eliminated completely.
Cutting rate is an essential index for China factories. It is the utilization rate of the original sheet to gray tinted glass. The higher the cutting rate, the higher the utilization rate of the original sheet. The cutting rate is directly related to the production cost and is an important indicator of the gray glass price.
When faced with the cutting rate and original size specifications, it is best to communicate between the customer and the factory or do exact calculation to achieve optimal results and get grey float glass.