Heat Strengthened
Glass

Different from fully tempered / toughened glass, heat strengthened glass cooling process is much slower. Heat-strengthened glass has been subjected to a heating and cooling cycle and is generally twice as strong as annealed glass of the same thickness and configuration. Heat-strengthened glass is typically specified when additional strength is needed to resist wind pressure, thermal stress or both, and the additional strength or safety break pattern of fully tempered glass is not required. Another advantage of heat-strengthened glass is that when broken, the glass fragments are more similar in size and shape to annealed glass fragments and thus tend to stay in the opening longer than fully tempered glass particles.

Facades of towers, window glasses in commercial complexes, multi storey buildings and housing complexes.