When sourcing structural metal for industrial applications, manufacturing cost and finishing requirements matter just as much as mechanical strength. Aluminum extrusion is the process of forcing a heated aluminum billet through a shaped steel die, allowing an Indonesia extruded aluminum manufactures to produce profiles with grooves, channels, flanges, and internal cavities in a single operation. Steel typically requires separate cutting, bending, machining, or welding to achieve the same geometry, adding fabrication time and cost. Aluminum also weighs about one-third as much as mild steel, reducing transportation costs, while its naturally forming oxide layer provides corrosion resistance without requiring galvanizing or paint.
PT Exalum Metal Indo operates its extrusion facility in West Jakarta, Indonesia, supplying industrial customers through its Exalummetal industrial aluminum products catalog. For manufacturers and distributors ordering aluminum profiles in volume, selecting a supplier involves more than comparing prices. Buyers also need to know whether a profile is already tooled, whether its weight per metre is available for accurate logistics planning, and whether the section can be reproduced consistently across future orders. This article explains how aluminum extrusion works and introduces five standard profile families that help manufacturers reduce tooling costs while maintaining consistent production quality.
1. Flat Bar
Flat bar is among the most straightforward extrusion shapes, and Exalum’s range includes about forty tooled sizes. Each size is called a section, a single fixed profile with its own catalog number that stays the same on every reorder. Section 10030 measures 25.00 mm wide by 5.00 mm thick, weighing 0.339 kg per metre, a typical spacer or mounting strip size. Section 10200 is larger, at 100.00 mm wide and 9.00 mm thick with a rounded corner, weighing 2.436 kg per metre, and knowing the exact weight per metre converts length requirements straight into shipping weight.
2. Spandrel
Spandrel is the profile designed to cover large areas with minimal weight, keeping long runs of facade or enclosure cladding light to ship. Profile 62021 is 100.00 mm wide with a 5.00 mm return leg and a 0.80 mm wall, weighing only 0.248 kg per metre.
3. Equal Angle
Equal angle serves bracing and edge protection roles, and Exalum offers sixteen sections covering a range of thicknesses. Type 20045 has a 19.00 mm leg with a 0.80 mm wall, weighing just 0.081 kg per metre, suited to lighter framing. Type 20048 keeps nearly the same leg length but a 2.00 mm wall, weighing 0.196 kg per metre, better for load-bearing parts.
4. C Channel
C Channel or unequal channel is an asymmetric U-shaped section often used for capture and retention applications. This variant, numbered 32032, is 25.40 mm wide with a 12.70 mm leg and a 0.90 mm wall, weighing 0.119 kg per metre, light enough that a full pallet carries a considerable length without excess shipping cost.
5. Heat Sink
Heat sink is the shape built to maximize thermal dissipation rather than mass. Catalog code 96009 is 50.00 mm wide by 35.00 mm deep with a 1.00 mm wall, weighing 0.577 kg per metre, and its perimeter-to-weight ratio shows how much dissipating surface area comes from each kilogram of metal, which matters for electronics and lighting.
Together, these five profile families cover many of the extrusion requirements found in manufacturing and construction, from general-purpose stock and architectural framing to structural reinforcement, retention systems, and thermal management. Because they are produced using established extrusion dies, manufacturers can reorder the same profiles with consistent dimensions and repeatable quality while reducing lead times and avoiding the cost of developing new tooling.
Requesting a Quotation
If your project requires Exalummetal industrial aluminum products in production quantities, PT Exalum Metal Indo supplies standard and custom aluminum extrusion profiles to customers across the United States, the United Kingdom, Australia, Canada, and many other international markets. To request a quotation, send your profile drawing or section number, required cut lengths, estimated order volume, and finishing specifications, such as anodizing or powder coating, to inquiry@exalummetal.com or WhatsApp +62 811 9429 970. If your project requires a non-standard profile, our engineering team also provides custom die development to match your specifications.