... stability for it can endure the temperature 3 times of that of the ordinary glass, and also withstand 300°C of difference ... in temperature change. Therefore, the tempered glass is widely used in the high rise buildings, automobiles, escalators ... 400mm Thickness range: 4mm - 19mmMin. bend radius: 1000mm (for 5-6mm thickness), 2000mm (for 8-12mm thickness), 3000mm (for 15-19mm ...