Terminology causes more sourcing errors than tolerance does. The same extruded profile is called an unequal channel in the United Kingdom and Australia, a C-channel or unequal U-channel in the United States, and a T-slot extrusion in North America is simply a conveyor profile elsewhere. Buyers working with Indonesia extruded aluminum manufactures get around this by quoting section numbers, since a catalog reference means the same cross-section regardless of which drawing standard the enquiry came from. The underlying advantages travel just as well: roughly a third the weight of steel, a self-forming oxide layer, and a finished cross-section straight off the press.
PT Exalum Metal Indo extrudes at its facility in Tangerang, Indonesia, supplying industrial and architectural customers across domestic and international markets. The range of Exalummetal industrial aluminum products mixes metric and imperial-derived sections, so profiles matching a 1/2 inch or 1 inch dimension sit alongside round metric sizes in the same catalog. Here are the list of six profiles that account for most of what ships worldwide.
1. Heatsink
Heatsink profiles pull heat from LED drivers, inverters, amplifiers, and 5G base station hardware. Section 96005 runs a 0.90 mm wall at 0.399 kg per metre, and section 96003 carries thicker 1.50 mm fins at 0.875 kg per metre for continuous thermal duty. Overseas enquiries often arrive specifying thermal resistance rather than a profile, in which case fin geometry and base thickness are worked back from the requirement. Section details sit on the Exalum product pages.
2. Equal Angle
Equal angle braces corners and protects edges in rack framing, machine guards, and shelving. Section 20025 has 12.70 mm legs, the imperial half inch, at 0.80 mm wall, 0.053 kg per metre, and section 20046 carries a 19 mm metric leg at 1.20 mm wall, 0.120 kg per metre. Having both conventions in one catalog saves an importer redesigning around whichever standard their existing stock follows.
3. Flat Bar
Flat bar is general-purpose stock for brackets, machine bases, straps, and reinforcement. Section 10038 is 25.40 mm, one inch, by 1.59 mm at 0.109 kg per metre, and section 10081 is 62 mm by 9 mm with a 1.00 mm radius, 1.509 kg per metre. Extruded bar arrives with square, finished faces rather than the burred edges sheared strip carries, which removes a dressing step wherever the part is machined on arrival.
4. Unequal Channel
Unequal channel retains panel edges while guiding travel on one axis, used as partition track, shopfitting capping, and light framing. Section 32052 is 38.10 mm across the web with a 25.40 mm flange in a 0.90 mm wall, 0.212 kg per metre. The asymmetric flanges give fastener depth on the concealed side while keeping the visible edge narrow, and the whole section comes out of the die without a seam.
5. Rectangular Hollow
Rectangular hollow section resists twisting across its enclosed area, suiting gates, canopy frames, guarding, and display systems. Section 45092 is 25.40 by 12.70 mm in a 0.90 mm wall at 0.180 kg per metre, and section 45204 is structural at 100 by 50 mm in a 2.50 mm wall, 1.962 kg per metre. Closed box sections resist the torsional distortion that would twist an angle or channel under the same off-centre load.
6. Conveyor Profile
Conveyor profile, or T-slot extrusion, is the modular rail behind conveyor frames, workstations, and machine guarding worldwide. Section 70360 is a double-slot rail at 1.20 mm wall, 1.095 kg per metre, and section 70480 is heavier at 1.35 mm wall, 2.014 kg per metre. Shipping rail rather than finished frames keeps container volume manageable, with assembly completed at destination using T-nuts and brackets.
Standard sections underpin international supply because the dies are proven, lead times stay predictable, and a section number means the same profile in every market. Load, orientation, fabrication method, and finish determine which one fits.
Requesting a Quotation
Exalum Metal supplies aluminum extrusion profiles in production quantities from Indonesia to the United States, the United Kingdom, Australia, Canada, and other industrial markets worldwide. Send your profile drawing or section number, required cut lengths, estimated order volume, and finishing specification such as anodizing or powder coating to inquiry@exalummetal.com or WhatsApp +62 811 9429 970. Custom die development is available for projects requiring a non-standard profile.