Safety Glasses

Heat Strengthened

Heat Strengthened

Heat strengthening is a special heat treatement process to increase the mechanical and thermal strength of glass making it twice as tough as annealed glass.

The glass is heated to a uniform temperature of approximately 650 °C to 700 °C. Ceramic rollers move the glass through the furnace at a regulated speed to ensure temperature uniformity and minimal distortion.

The process is similar to the traditional process of glass tempering, but the cooling cycle is less rapid.

However, the heating temperature remains the same for both processes.

Due to the relatively lower rate of cooling during the heat strengthening process, heat strengthened glass develops less stress as compared to fully tempered glass.

Recommended for skylight installations.


Standard: EN1863

Max size: 2200*4200mm

Min size: 100*250mm

Thickness: 3-10mm