Surface Treatments for Aluminum Profiles
Surface treatments include anodizing, sandblasting, powder coating, spraying, electroplating, electrophoresis, sandblasting, deburring and polishing. According to your needs, we can adjust the thickness of the oxide film and the thickness of the sprayed powder.
Professional Aluminum Surface Treatment
Aluminum Surface Treatment Options
Here are many options for aluminum surface treatment. If your project requires a surface treatment not listed, please contact us.
Anodizing
Enhances corrosion resistance, wear resistance, surface hardness, and can achieve a variety of color surface effects.
Powder Coating
Environmentally friendly and pollution-free, durable coating, and a variety of colors and textures
Spray Painting
Durable, smooth and beautiful coating, with a variety of color options
Electroplating
Improves the wear resistance, corrosion resistance and decorativeness of aluminum
Polishing
Improves surface brightness and beauty
Sandblasting
Increases surface adhesion and eliminates surface defects
Surface treatment parameters
All surface treatments can be combined with aluminum extrusion and CNC machining services provided by Guo Di Aluminum to ensure consistent quality throughout the entire production process.
| Process | Thickness Range | Color Options | Surface Effect | Corrosion Resistance | Notes |
|---|---|---|---|---|---|
| Anodizing | 5–25 μm | Silver, Black, Custom | Smooth / Matte | Good | Standard decorative & protective finish |
| Hard Anodizing | 25–80 μm | Dark Gray / Bronze | Hard, Wear-resistant | Excellent | Higher hardness, industrial use |
| Sandblasting | — | Natural | Matte / Textured | — | Often used before anodizing |
| Powder Coating | 60–120 μm | Wide color range (RAL) | Smooth / Textured | Excellent | Strong weather resistance |
| Electrophoresis | 10–25 μm | Transparent / Black | Glossy / Uniform | Good | Even coating, good coverage |
| Electroplating | 5–20 μm | Nickel, Chrome, etc. | Metallic / Bright | Moderate | Decorative or functional coating |
| Brushing | — | Natural / Anodized base | Hairline / Satin | — | Often combined with anodizing |
| Polishing | — | Mirror / Bright | High Gloss | — | Decorative finish |
Surface treatment cases
We ensure the surface treatment meets your parameter requirements, as well as the integrity and quality of the surface.
Aluminum surface treatment workshop
- Pretreatment Systems: Include degreasing, rinsing, and surface conditioning for optimal performance.
- Anodizing line: A thick aluminum oxide protective film is generated on the aluminum surface through an electrochemical reaction
- Powder spraying line: Powder coating is sprayed onto the aluminum surface through electrostatic spraying, and then cured into a film through heat treatment.
- Paint spraying line: Liquid paint is sprayed onto the aluminum surface and cured into a film.
- Electroplating line: A layer of metal or alloy coating, such as nickel, chromium, copper, etc., is deposited on the aluminum surface through an electrolytic reaction.
- Sandblasting line: The aluminum surface is treated by high-speed spraying of sand particles to form a rough or matte surface.
- Polishing line: The fine protrusions on the aluminum surface are removed by mechanical, chemical, or electrochemical methods to make the surface smooth and flat.
Process Control of Aluminum Surface Treatment
Our quality team strictly monitors the entire manufacturing process of surface treatment, from raw materials to surface processing, to ensure that the products meet the needs of customers.
Pretreatment
Ensure the surface is clean, and remove impurities and oxides
Film Thickness
Ensure the film thickness on the surface meets the requirements and ensures uniformity
Appearance Quality
Ensure the surface is smooth without scratches, dents, and uniform brightness
Color Difference Detection
Ensure the surface color meets the requirements and ensure uniform color
- 24 hours quotes
Various aluminum alloys - available
- Extrusion presses with different tonnages
- Multiple surface finishes available
- Complete post-processing for aluminum profiles
- Design for Manufacturing (DFM) feedback
- Rich experience in aluminum product processing across various industries.
- One-stop aluminum manufacture services covering all aluminum profile manufacturing technologies
- Quality assurance
- Standard 25-day lead time