This European Standard specifies tolerances, flatness, edgework, fragmentation and physical and mechanical characteristics of monolithic flat thermally toughened safety glass for use i buildings. Information on curved thermally toughened safety glass is given in annex B, but this product does not form part of this standard. Other requirements, not specified in this standard, may apply to thermally toughened safety glass, which is incorporated into assemblies, e.g. laminated glass or insulating units, or undergo an additional treatment, e.g. coating. The additional requirements are specified in the appropriate product standard. Thermally toughened safety glass, in this case, does not lose its mechanical or thermal characteristics.
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