Dear Sir/Madam,
As a valued customer we are providing you with an important notice that standards upgrade safety requirement. The nature of the revisions outlined by the Standards Developing Organization impact the Reports we have issued for your products, so it is important to review this letter carefully.
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Standard Number
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Standard Name
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Product
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DOP
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DOW
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EN 12150-1:2015 |
Glass in building — Thermally toughened soda lime silicate safety glass Part 1: Definition and description |
This European Standard specifies tolerances, flatness, dgework, fragmentation and physical and mechanical characteristics of monolithic flat thermally toughened soda lime silicate safety glass for use in buildings. Information on curved thermally toughened soda lime silicate safety glass is given in Annex A, but this product does not form part of this European Standard. Surface finished glasses (e.g. sandblasted, acid etched) after toughening are not covered by this European Standard. | September 2015 | March 2016 |
Important Information Regarding this Standards Update Notification
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Some figures have been revised and some new figures have been added; |
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Clause 3
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New terms and definitions have been included in Clause 3, e.g. air cushion process (3.6), edge lift (3.9) and roller wave distortion (3.13). |
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Clause 6.1
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Further nominal thicknesses have been included in Table 1; |
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Clause 6.2.3
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Subclause 6.2.3 “Tolerances and squareness” has been completely revised; the squareness of rectangular glass panes is now expressed by the difference between its diagonals. |
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Clauses 6.3
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Add four kinds of distortion (roller wave distortion, air cushion wave distortion, edge lift and perimeter deformation), inclued measurement method and limitaton. |
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Clauses 7.5
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New test item for countersunk holes. |
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The normative annex “Determination of U value” has been ｄｅｌｅｔｅd; |
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A new informative annex dealing with an alternative method for the measurement of roller wave distortion has been added. |
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