The Top Chinese Aluminum Extrusion Partner
Custom Aluminum Extrusion Services
Beyond standard profiles, our custom aluminum extrusion services unlock the full potential of your designs. We specialize in producing complex, tight-tolerance extruded shapes that serve as the foundation for your final products.
To streamline your supply chain, we seamlessly integrate secondary operations, including precision CNC machining, drilling, tapping, and surface finishing delivering net-shape or near-net-shape components that are ready for assembly upon delivery.
What is Aluminum Extrusion ?
Aluminum extrusion is a proven manufacturing technique used to create lightweight, durable, and high-strength aluminum profiles with precise, uniform cross-sections. In this process, a heated aluminum billet is pushed through a specially designed steel die using a hydraulic press. This allows manufacturers to produce anything from simple rods and channels to highly complex, custom-engineered shapes used across industries such as construction, automotive, electronics, and aerospace.
The beauty of aluminum extrusion lies in its efficiency and design flexibility. It enables the production of long, continuous parts with consistent mechanical properties, while also allowing for easy integration of secondary processes like CNC machining, drilling, and anodizing to deliver a fully finished component ready for final assembly.
What’s advantages of Aluminum Extrusion?
Lightweight yet Strong
Exceptional strength-to-weight ratio, ideal for structural frames and portable equipment.
Design Freedom & Assembly Reduction
Complex cross-sections, hollow, semi-hollow, multi-void are formed in a single profile, minimizing secondary joins and reducing total part count.
Cost-Effective for Volume Production
Lower tooling costs than die-casting or forging, plus high extrusion speeds that drive down per-unit pricing.
Superior Surface & Corrosion Resistance
Smooth, ready-to-finish surfaces accept anodizing, powder coating, or painting flawlessly, while the natural oxide layer ensures durability in medical, outdoor, and industrial environments.
Excellent Thermal & Electrical Conductivity
Efficient heat dissipation makes it ideal for electronic housings and LED applications, with good conductivity for specialized uses.
Sustainable & Post-Processing Friendly
100% recyclable with no property loss, and readily machined, drilled, bent, and welded—enabling us to hold tolerances as tight as ±0.01mm.
Aluminum extrusion Type
Why Choose RPD?
Professional CNC Machining, sheet fabrication, Injection Molding & rapid prototyping, Professional Services, Comprehensive A-Z Solutions.
Guaranteed Quality & Rigorous Inspection
Advanced Technology & Broad Capabilities
Technical Partnership & Engineering Support
Wide Material/Project Experience
Competitive Value & Cost Optimization
Speed & On-Time Delivery
Our Aluminum Extrusion Capabilities
Contact us to explore more opinions today!
By combining custom aluminum extrusion with advanced post-processing like CNC machining, milling, and drilling, we deliver precision tolerances down to 0.01mm without inflating costs. Whether you need electronic enclosures, medical rails, or automation parts, our profiles offer the perfect balance of tight accuracy and budget-friendly production.
Aluminum Extrusion Applications
- EV Battery Enclosures
- Heat Sink Profiles
- Solar and Energy Storage Frames
- Rail Transit Interior Extrusions
- Industrial Automation Struction
- Medical Device Housing
- Telecom and Network Enclosures
- EV Charger Enclosures
- Aerospace and UAV Components
- Consumer Electronic astings
- linear motion systems
- Structural components
Rapid Prototyping Surface Finishes
| Surface Finish Type | Description | Services | Typical Applications / Benefits | Applicable Materials | Price |
| As machined | The state of the workpiece without any additional, specialized surface finishing or deburring treatment | CNC machining, Sheet Metal Fabrication, Injection Molding, Die Casting 3D Printing, Vacuum Casting | Suitable for products or prototypes without additional requirements for surface treatment | Metal, plastic | $ |
| Smooth | Deburring treatment | CNC machining, Sheet Metal Fabrication, Injection Molding, Die Casting 4D Printing, Vacuum Casting | Suitable for products or prototypes without additional requirements for surface treatment | Metal, plastic | $ |
| Electroplating | In an electrolyte solution, metal ions are attached to the surface of the workpiece by an electric current | CNC machining, Sheet Metal fabrication, Injection Molding, Die Casting, 3D printing, Vacuum Casting | Excellent anti-corrosion & appearance. Chrome/nickel plating provides bright, wear-resistant surface. Improves hardness, wear resistance & conductivity. | Metal | $$ |
| Anodizing | Electrochemical process generates a hard and porous oxide film on the surface of metal, usually for aluminum. | CNC machining, Sheet metal fabrication，Die Casting | High corrosion & wear resistance, excellent decoration (various colors via dye adsorption), good insulation, and ideal as a coating substrate for enhanced adhesion. | Metal | $$ |
| Powder Coating | Attach dry powder coating to the workpiece through electrostatic adsorption, and then cure at high temperature | CNC machining, Sheet metal fabrication，Die Casting | Thicker, durable, wear/impact-resistant. Solvent-free, eco-friendly, recyclable. Textures: gloss, matte, sanding, wrinkles. | Metal | $$ |
| Painting | Atomize liquid coating with a spray gun and attach it to the surface of the workpiece. | CNC machining, Sheet Metal Fabrication, Injection Molding,Die Casting 3D Printing, Vacuum Casting | The colors are infinite, theoretically any color can be blended. Relatively low cost, suitable for various shapes and sizes. | Metal, plastic, ceramic, Composite materials | $$ |
| Brushing | Forms a continuous fine texture to improve appearance, slip resistance, and reduce light reflection | CNC machining, Sheet metal fabrication，Die Casting | Highly decorative, presenting a metallic texture, able to cover small scratches, and resistant to fingerprints | Metal | $$$ |
| Sand Blasting | Mechanical treatment of workpiece surface by cleaning, roughening, or finishing using high-speed sand flow impact. | CNC machining, Sheet metal fabrication，Die Casting | Obtain a uniform matte/frosted texture, clean the surface, and improve coating adhesion. | Metal, plastic, ceramic | $$ |
| Black Oxide | It is a chemical conversion process that generates a layer of magnetic iron oxide (Fe ∝ O ₄) film on the surface of steel or stainless steel. | CNC machining, Sheet metal fabrication，Die Casting | Excellent dimensional stability, rust prevention, anti-reflective, and wear resistance (with post-processing). Provides a durable matte black finish with strong adhesion, low cost | Metal | $$ |
Custom Parts For Different Industries
Provide CNC Machining One-Stop Services for Different Industries
Would you like to start a project with us?
End-to-End 6D Solutions, From Concept to Mass Production. Integrated 5 Steps Quality Control Across Every Stage.
Phase 1: Material selection
The process encompasses: conducting a product feasibility analysis, specifying the manufacturing processes and materials choose, establishing tolerance standards, and formulating cost optimization strategies.
Phase 2: Rapid prototype Design
The scope includes leveraging mold flow analysis, design simulation, and structural optimization to guarantee high performance and superior manufacturability.
Phase 3: Manufacturing
Once you approve the quotation and determine the production method for the prototype, we will start the production process. Regarding the surface treatment, you can also choose the correct one from a wide range of processing options.
Phase 4: Testing
De-risks production by using in-house trials to verify parts function and confirm part quality.
Phase 5: Sample Confirmation
Before the final approval, provide the customers with satisfactory samples for evaluation and feedback.
Phase 6: Delivery
Thoroughly inspected and promptly shipped — your parts arrive fast, reliable, and ready for testing or presentation.
FAQs About Our Aluminum Extrusion Services
Do you offer both metal and plastic prototyping?
Yes. We handle a wide range of metals say aluminum, stainless steel, brass, copper, titanium, etc and plastics like ABS, PC, PMMA, POM, PEEK, PA66, PP, TPU, and many engineering-grade resins. Please refer to our material selection guide for the full list.
Which process should I choose for my prototype — CNC, 3D printing, or injection molding?
We provide free process recommendations based on your CAD model and requirements.
What surface finishes do you offer?
We provide a full range of post-processing: as-machined, bead blasting, polishing, brush, anodizing (clear/color/hardcoat), powder coating, painting, electroplating, silk-screening, laser engraving, so on. We can also match Pantone color standards.
What is your quality control system?
We operate under a rigorous Quality Management System (QMS) aligned with ISO standards. Our 5 Steps QC process is including IQC (Incoming Quality Control) , FQC (Final Quality Control) , OQC (Outgoing Quality Control) for routine production.
QE (Quality Engineering) / CAPA (Corrective and Preventive Actions) implemented throughout the entire product lifecycle, especially during the post-sale stage, to drive continuous improvement. Simply speaking 100% inspection before shipment to ensure zero defects.
What kind of quality assurance or warranty do you offer on orders?
One of the reasons engineers purchase from RPD is that we take on all the risks for you. We guarantee you’ll love what you get. Not happy with it? We’ll either redo it or give you a full refund. Your purchase is completely risk-free.
Is there a minimum order quantity (MOQ)?
No. We have no MOQ for rapid prototyping，we gladly accept single-piece orders, as well as pre-production batches.
Which kind of file formats can I send for tooling& production?
We accept STEP (.stp), IGES (.igs), SolidWorks (.sldprt), Parasolid (.x_t), STL, and AutoCAD (.dwg/.dxf). STEP is preferred for 3D models. For 2D drawings, PDF with GD&T annotations is recommended.
How do I request a quote?
Simply send your 3D CAD file (STEP preferred) and 2D drawing (PDF with tolerances) to our sales team. Include your desired quantity, material, finish, and target delivery date. We typically respond with a formal quote within 4 working hours.