About toughened glass
During the process of the toughening of glass, glass is treated chemically by heating it in a special toughening furnace to melting temperature (ca 700 degrees, depending on the thickness of the glass) and then rapidly cooled.
In the case of breaking, thermally toughened glass shatters into numerous little pieces, the edges of which are normally blunt.
Whereas thermally treated glass cannot be cut, drilled or ground after toughening, all treatment should be performed before toughening.
Glass toughened by company W-Glass corresponds to standard EVS-EN 12150. This European standard determines the tolerances, flatness, edge treatment, shattering and physical and mechanical properties of monolithic, smooth, thermally toughened safety glass designed for use in construction.