Heating: The aluminum bolt is heated to 460 to 520 degrees Celsius to allow the metal to reach its plastic state. Extrusion: The hot aluminum billet is pressed through a preheated pressing tool with a pressing force of 18 MN or 25 MN. This gives the profile its geometric shape. Profile cooling: Immediately after extrusion, the profiles are cooled (there are various methods: with air, with water or with a spray mist). Cooling is necessary for mechanical properties/strength. Stretching: After extrusion and cooling, the profiles are slightly stretched to the plastic state (beyond the elastic limit) to be straight. Cutting to length: Profiles are cut according to customer requirements (standard 6,000 mm) using a saw. Artificial aging: Heat treatment of the profiles to achieve the mechanical properties. Packing: This is followed by the customer-oriented packing of the profiles. The profiles/semi-finished products are then ready for dispatch. The entire manufacturing process is monitored by certified quality management systems (ISO 9001, IATF 16949).