Heat Strengthened Glass (HS Glass) also referred to as semi-tempered glass or half tempered glass. They are produced in tempered furnaces too. While the opposite of toughened glass，heat strengthened glass has been subjected to a long cooling cycle.
Heat Strengthened Glass strength is twice as strong as annealed glass of the same thickness and configuration. Advantages of heat strengthened glass: there is no risk of spontaneous break. Its breakage pattern similar to annealed glass. Therefore, they are not safety glass, monolithic Heat Strengthened Glass Application: for necessary composition materials of further production for HS laminated glass or HS laminating insulated glass unit;
Shenzhen Liaoyuan Glass factory recommends the use of heat-strengthen glass for applications laminated insulated glass for glass curtain walls. Monolithic Heat Strengthened Glass thickness from 4mm to 19mm, HS Glass Types including clear float glass, ultra clear glass, Ceramic Glass, Digital Printing Glass, Acid-etched Glass, Low e glass, tinted glass, etc.