aluminium extrusion

Different Types of Aluminium Profiles

Whether it’s for modern buildings, vehicles or industrial equipment, aluminium profiles are everywhere. From intricate window frames to tough diamond plate flooring, these versatile materials shape our structures. But with so many options, which type is best? This guide explores the top aluminium extrusion, their uses and why these sustainable, corrosion-proof solutions are perfect for countless construction and manufacturing needs.

Aluminium Profiles for Curtain Wall Facades 

Curtain wall facades on modern buildings utilize a variety of specialized extruded aluminium profiles. Mullions, transoms, perimeter trims and wall panels are commonly made from extruded aluminium due to its strength, corrosion resistance and lightweight.

Mullions are the main vertical and horizontal framing members that hold the facade in place. They can have different profiles depending on structural and design requirements. Transoms are the horizontal elements located between floors. Perimeter trims are used to finish the edges. Extruded aluminium profiles allow curtain wall systems to be engineered for large spans with minimal structural thickness. They can be anodized or painted in different colours to achieve the desired aesthetic. Aluminium curtain wall systems are highly durable and require very low maintenance over the lifetime of the building.

Aluminium Profiles for Doors and Windows 

Extruded aluminium profiles are extensively used in aluminium doors, windows and glazing systems due to their corrosion resistance, strength and versatility. Common profiles include frames, mullions, transoms, panels and trims.

Door and window frames are hollow extruded sections that provide strength and thermal breaks. Mullions and transoms are similar to curtain wall systems. Panels can be made of aluminium composite material, insulating glass or polycarbonate for glazing. Co-extruded thermal barrier profiles are also used where insulation is required between the inner and outer frames. Extruded aluminium allows for large spans and complex geometries in structural glazing applications. Its light weight also makes aluminium an energy-efficient choice for fenestration. Different finishes can be applied according to architectural specifications.

Aluminium Profiles for Railings and Balustrades

Extruded aluminium handrails, balusters and balustrade panels are a popular choice for railings on balconies, stairs, walkways and other applications. Common profile types include round, square and rectangular tubes or bars.

They provide strength and durability without much maintenance. Square and rectangular hollow sections can be used for horizontal and vertical rails. Round tubes make good balusters spaced at standard intervals. Aluminium railing systems are engineered for structural strength and code compliance. They can be powder-coated or anodized in different colours. Extruded aluminium railings are corrosion-resistant, weatherproof and suitable for outdoor use. Their light weight also makes installation easier compared to other materials.

Other Specialized Aluminium Shapes

In addition to standard profiles, aluminium can also be extruded or machined into more specialized shapes according to project requirements. Some examples include extrusions for blinds, shutters and awning components. Hollow and solid rectangular, circular or triangular sections are used for structural framing in industrial equipment.

Complex hollow sections are used as heat sinks for electronics. Thin-walled tubing finds applications in bicycles, ladders, and scaffolding. CNC machining allows aluminium to be cut into intricate 3D geometries for architectural details, molds, and other precision components. With the versatility of extrusion and machining processes, aluminium can be engineered into almost any shape as required. Its formability, strength and corrosion resistance make it suitable for a wide variety of specialized applications.


In summary, the main types of aluminium profile include extruded, rolled, sheets, composite panels, diamond plate, and tread plate. Extruded sections are the strongest and most commonly used for structural framing, doors, windows and curtain walls. Rolled shapes are lower-cost alternatives. Sheets and composite panels are used for cladding and non-load-bearing applications. Special finishes like diamond plate provide slip resistance. With continuous innovation, aluminium profiles continue to be engineered for an ever wider range of construction and industrial applications due to their light weight, strength, formability and corrosion resistance. Their sustainability also makes aluminium an environment-friendly material choice.