Many different finishing options are available for extrusions. Among them are mechanical finishes.
They are used to improve the appearance of aluminium. And it is common for aluminium profiles to be anodized after mechanical finishes are applied. Specifying a mechanical finish for your extrusions can be a good way to improve their appearance. Finishes like abrasive blasting, grinding, polishing, buffing, and mass finishing can all be applied to profiles.