Tempered safety glass

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By tempering the glass its mechanical integrity can be increased so if the glass breaks, it will break into small crumbs. The tempered glass crumbs, or parts, won’t injure humans or property. The tempering process is used in glasses that are placed on sauna doors, glass railings, movable glass walls, automatic doors and other structures that require strength. A more detailed definition of the usage of tempered glass is available in the Finnish Rakentamismääräyskokoelmat document, and specifically under the part titled Käyttöturvallisuus, F2.

In Rakla’s facility in Tampere the following glass dimensions are made:

Glass thickness from 3 to 19 millimeters
Minimum dimensions 100×260 millimeters
Maximum dimensions 2400×4800 millimeters

In Rakla’s facility in Helsinki the following glass dimensions are made:

Glass thickness from 4 to 12 millimeters
Minimum dimensions 100×260 millimeters
Maximum dimensions 2100×3600 millimeters