The choice between aluminium and steel profiles depends primarily on the application. A key characteristic of steel is that it has a number of superior properties in terms of strength.
A technical and commercial advantage of roll-forming over aluminium extrusion is that a number of operations can be integrated into the profiling process (inline), e.g. piercing, cutting or sawing to actual length and bending of profiles. These operations cannot be integrated into the aluminium extrusion process (offline), which is therefore more costly.
Aluminium roll-forming (starting from an aluminium coil) is in principle also possible at Sadef, but requires a special treatment because it occurs less frequently.