Hard anodizing

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Extruded Aluminium Sections, Construction and Facade Elements For quality reasons, anodized aluminium sections, pre-treated by grinding, brushing or polishing, are still used today, especially in interior finishing work. Due to the diverse shapes of these sections, a lot of manual work requiring specialist experience is involved. By contrast, for technical and price reasons, construction and façade elements are usually only chemically dull-finished (pickled).