DIN EN 12020-2:2017-03

This European Standard specifies tolerances on dimensions and form of extruded precision profiles, in alloys EN AW-6060 and EN AW-6063 manufactured with and without a thermal barrier. It applies to extruded products supplied without further surface treatment. Precision profiles covered in this standard are distinguished from extruded profiles for general applications covered in EN 755-9 by the following characteristics: - they are mainly for architectural applications; - they meet more stringent requirements regarding the surface condition of visible surfaces; - the maximum diameter of the circumscribing circle is 350 mm; - they are made to closer tolerances on dimensions and form. In the case of profiles which, due to the complexity of their design, are difficult to manufacture and specify, then special agreements between supplier and purchaser may need to be reached. This European Standard has been prepared by CEN/TC 132/WG 5 "Extruded and drawn products" (secretariat: SN, Norway). On the national level the responsible committee is Working Committee NA 066-01-04 AA "Strangpresserzeugnisse" ("Extruded products") at DIN Standards Committee Nonferrous Metals (FNNE).