Also called "sections". Long rod-like aluminium products with constant cross section, which can be produced in a range of shapes and forms, including hollow ones. Profiles are produced almost exclusively by extrusion.
Thanks to its easy formability (ductility), aluminium is a preferred material for the manufacture of profiles. The metal"s corrosion resistance is beneficial in many applications, as is the possibility to obtain decorative surfaces by anodising or coating.
Construction with aluminium is based on profiles. They are made by extrusion in a multitude of cross sections and from various alloys. One differentiates between solid and hollow profiles. The cross sections range from a few millimetres diameter (of the circumscribing circle) to over 0.8 metres diameter in the case of large profiles; the length of standard profiles can be up to 50 metres and that of large profiles up to 30 metres.
It is possible to produce very complex cross sections, for example with several cavities or with grooves (such as for inserting seals in window frames); profiles are also manufactured and supplied for the following product categories:
- Standard profiles: simple profiles with L-, T-, U- or Z-shaped cross sections, available from stock.
- Special shapes produced to customer order, for example boat masts in shipbuilding.
- Integral profiles, i.e. multifunctional profiles that fulfil several functions simultaneously: for example ventilation ducts for air conditioning technology that can also carry power cables.
- System profiles include several coordinated structural elements (mostly integral profiles), which can be assembled to form complete systems. They are used, for example, in mechanical engineering and the manufacture of industrial equipment and in shopfitting and the building of trade show booths.