Aluminium Radiator Profiles
High-efficiency aluminium heat-sink extrusions — the “sunflower” radiator profiles trusted across machinery, automotive, wind power, compressors, railway and home-appliance industries for their light weight, excellent thermal performance and energy-saving design.
Why Aluminium Radiator Profiles
Aluminium alloy combines light weight with high thermal conductivity — finned extrusions multiply the cooling surface area for maximum heat dissipation.
High Thermal Efficiency
Finned designs maximise surface area for fast, passive heat dissipation.
Lightweight
Up to one-third the weight of copper equivalents — easier handling and installation.
Custom Fin Design
Fin pitch, height and thickness engineered to your thermal budget.
Corrosion Resistant
Anodized surface protects against oxidation in humid environments.
Cost Effective
Extrusion is the economical route for long-run heat sinks of any profile.
Clean & Aesthetic
Uniform silver or black anodized finish for exposed applications.
Main Applications
Typical Specifications
| Alloy | 6063-T5 / 6061-T6 (other alloys on request) |
| Surface Finish | Mill finish, silver/black anodizing, powder coating |
| Length | Cut to length per drawing (standard 6m) |
| Tolerance | Per GB/T 5237 / EN 755 or your drawing |
| Fin Options | Straight, step or multi-fin heat-sink sections |
| Packaging | Wrapped, palletized with edge protection |
Customisation & OEM
Send your section drawing or existing sample — we build the die and produce to your alloy, finish and tolerance requirements. Private-label and export documentation support available.
FAQs
Which alloys do you extrude for heat sinks?
6063-T5 is our standard choice for thermal applications; 6061-T6 and other alloys are available for higher strength or specific conductivity needs.
Can you make a custom die from my drawing?
Yes. Provide a 2D/3D section drawing or sample — we confirm die feasibility before tooling.
What surface finish do you recommend?
Silver or black anodizing is recommended for radiators — it improves corrosion resistance and emissivity while keeping a clean finish.
Do you support OEM / private label export?
Yes — as the group’s export company we handle OEM production, packaging and export documentation.
Models & Specifications
Typical specifications for reference — every diameter, height, fin geometry and finish can be customized to your drawing. Final parameters are confirmed on quotation.
| Model | OD (mm) | Height (mm) | Fin qty | Fin thickness (mm) | Base thickness (mm) | Mounting | Rth (°C/W) | Typical power (W) | Application | Quote |
|---|---|---|---|---|---|---|---|---|---|---|
| SK-SF20-15 | 20 | 15 | 8 | 1.2 | 4 | 2×M3 | 6.5 | 3–5 | LED spot, sensors | Quote |
| SK-SF30-20 | 30 | 20 | 10 | 1.5 | 5 | 3×M3 | 4.2 | 5–8 | LED bulbs, power modules | Quote |
| SK-SF40-25 | 40 | 25 | 12 | 1.5 | 6 | 4×M3 | 3.1 | 8–12 | COB light engines, drivers | Quote |
| SK-SF50-30 | 50 | 30 | 14 | 1.8 | 6 | 4×M4 | 2.4 | 12–18 | High-bay lighting | Quote |
| SK-SF60-35 | 60 | 35 | 16 | 1.8 | 8 | 4×M4 | 1.9 | 18–25 | Stage lights, projectors | Quote |
| SK-SF80-40 | 80 | 40 | 20 | 2.0 | 8 | 4×M5 | 1.3 | 25–40 | Industrial lighting, laser modules | Quote |
| SK-SF100-50 | 100 | 50 | 24 | 2.0 | 10 | 6×M5 | 0.95 | 40–60 | Power electronics, EV chargers | Quote |
| SK-SF120-60 | 120 | 60 | 28 | 2.2 | 10 | 6×M6 | 0.72 | 60–90 | Inverters, motor drives | Quote |
| SK-SF160-80 | 160 | 80 | 32 | 2.5 | 12 | 6×M6 | 0.48 | 90–150 | Welders, servo drives | Quote |
| SK-SF200-100 | 200 | 100 | 40 | 2.5 | 12 | 8×M8 | 0.34 | 150–250 | Traction & industrial inverters | Quote |
| Model | Section W×H (mm) | Fin pitch (mm) | Fin thickness (mm) | Base thickness (mm) | Rth (°C/W) | Typical power (W) | Application | Quote |
|---|---|---|---|---|---|---|---|---|
| SK-CF40-30 | 40×30 | 5.0 | 1.2 | 5 | 4.8 | 8–12 | Small drivers, sensors | Quote |
| SK-CF60-35 | 60×35 | 5.5 | 1.4 | 6 | 3.2 | 12–20 | LED modules | Quote |
| SK-CF80-40 | 80×40 | 6.0 | 1.5 | 6 | 2.6 | 20–30 | Power supplies | Quote |
| SK-CF100-45 | 100×45 | 6.5 | 1.6 | 8 | 2.0 | 30–45 | Inverters, chargers | Quote |
| SK-CF120-50 | 120×50 | 7.0 | 1.8 | 8 | 1.55 | 45–65 | Servo drives | Quote |
| SK-CF150-60 | 150×60 | 7.5 | 2.0 | 10 | 1.10 | 65–100 | UPS, industrial chargers | Quote |
| SK-CF200-70 | 200×70 | 8.0 | 2.0 | 10 | 0.80 | 100–150 | Welding machines | Quote |
| SK-CF250-80 | 250×80 | 8.5 | 2.5 | 12 | 0.60 | 150–220 | Industrial inverters | Quote |
Alloy: 6063-T5 / 6063-T6 (6061-T6 and 6082-T6 on request) · Tolerance: GB/T 6892 / EN 755 · Finish: mill, clear anodized, black anodized · Custom lengths, machining and assembly available. Thermal resistance is a typical value at 25 °C ambient, natural convection, horizontal mounting; actual performance depends on airflow, interface material and mounting.
Need radiator profiles for your project?
Send your drawing or thermal spec for a fast quote.