Designing aluminium profiles gives immense possibilities. There are no general rules for what shapes and tolerances that can be applied in each case. Shape, wall thickness and alloy will have influence on the achieved tolerances.
Narrow tolerances can reduce the productivity of the profile and thus the cost. This has to be taken into consideration when designing the profile. Alumeco is working according to the Standards of European Committee for Standardization, CEN, EN 755-9 and EN 12020-2.
The standards have to be considered as guidance. In the case of profiles which, due to the complexity of their design, are difficult to manufacture and specify, then special agreements between customer and Alumeco may need to be reached.