Types of Aluminium Profiles and Where They Are Used

Angles, channels, bars and other simple sections

Simple profile names usually describe an outline. An angle has two legs, a channel has a web and flanges, and a flat bar has a rectangular section. These names make an initial catalogue search easier, but they leave important questions open: leg lengths, wall thickness, corner details, length and dimensional tolerances.

Suppose a fabricator needs a channel around an existing panel. The internal opening and clearance at the panel can matter more than the outside width shown in a photograph. Describe the panel, the intended assembly and the dimensions that control the fit. Ask the supplier to confirm the exact section code before placing the order.

Hollow sections and profiles with detailed geometry

A hollow profile encloses a space in its cross-section, as a rectangular tube does. More detailed sections may combine chambers, ribs, slots and projecting features. Those features have to be considered together when an extrusion manufacturer reviews the design; an outline that can be drawn is not automatically ready for tooling.

Show the whole cross-section when requesting a review. Cropping the drawing to one groove can hide the wall or chamber connected to it. Mark the mating surfaces and explain which features are functional, decorative or available for adjustment. Keep the final geometry under one approved drawing revision.

Architectural aluminium profiles for buildings

Architectural profiles are identified by their role in a building assembly. Common enquiries include window and door sections, facade members, partition profiles, trims and louvre sections. Omalco's architectural aluminium profile range is organised around these application families so buyers can move from a project requirement to the relevant catalogue.

Keep matching sections together in your enquiry. A window frame may need a particular sash, bead and interlock; a facade component may interface with brackets, seals and other members. The project designer or system provider confirms the assembly requirements. The extrusion supplier then needs the approved section schedule and supply specification.

Solar, equipment and OEM aluminium profiles

A solar-frame profile, an equipment rail and a heat-sink extrusion may all be aluminium profiles, but the useful specification differs. A frame member has interfaces and joining details; an equipment component may need machining; a heat-sink design has thermal and mounting requirements. Name the application before choosing from a similar-looking section.

For an OEM enquiry, include the part in context: the assembly drawing, mating component, further operations and acceptance requirements. For solar components, use the approved component schedule and project specification. A profile supplier's quotation establishes the proposed material and processing scope; the relevant engineering approval establishes suitability for the system.

Standard vs custom aluminium profiles

A catalogue profile can be a practical option when its dimensions and supplied condition meet the requirement. A custom extrusion is worth discussing when the part needs a particular interface or geometry. Avoid choosing either route on the profile name alone: compare the finished part, any additional operations and the approvals needed.

For example, a standard channel followed by machining and a custom section with an integrated feature are two proposals to investigate. Request the tooling scope, trial route, quantities and further processing for each. Omalco can review your custom aluminium profile requirement against the drawing instead of relying on a generic shape description.

Build a profile schedule before asking for a price

For a mixed order, give each profile its own line. Use a drawing or section code, length, finish and quantity for that item. A single total weight does not tell an aluminum extrusion manufacturer how many different dies or sections are involved, or how the material needs to be packed and identified.

Link the schedule to the current drawings and label the required delivery location. This gives Omalco a clearer basis for reviewing the product family, open technical points and quotation scope. It also gives your receiving team a reference when checking the supplied sections against the order.

Frequently asked questions