NBN EN 12337-1 : 2000

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Glass products
5 Fracture characteristics
6 Dimensions and tolerances
      6.1 Thickness
      6.2 Width and length (sizes)
      6.3 Flatness
7 Edge work, holes, notches and cut-outs
      7.1 Warning
      7.2 Edge working of glass for chemical
             strengthening
      7.3 Profiled edges
      7.4 Round holes
      7.5 Notches and cut-outs
      7.6 Shaped panes
8 Mechanical strength
9 Other physical characteristics
      9.1 Optical distortion
      9.2 Thermal durability
10 Marking
Annex A (normative) Determination of U valve
Annex B (informative) Curved or profiled chemically
                      strengthened soda lime silicate glass

Tolerances, edgework, fragmentation, flatness and physical and mechanical characteristics of flat chemically strengthened soda lime silicate glass for use in buildings are defined. Annex B gives information on curved or profiled chemically strengthened soda lime silicate glass but this product does not form part of this standard. Chemically strengthened soda lime silicate glass, defined hereafter, can be incorporated into assemblies; e.g laminated glass or insulating units, or undergo an additional treatment, e.g coating, and will therefore also comply with the requirements of the appropriate finished product standard.