Foshan Pailian Aluminium Ltd is one of the most reliable manufacturers and suppliers of custom cnc machined aluminum extrusion profiles in China. Welcome to wholesale cheap custom cnc machined aluminum extrusion profiles made in China here from our factory. We also accept customized orders.
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Item |
Details |
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Item Type |
Extruded Aluminum Profile with CNC Machining |
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Material |
Aluminum 6063, 6061, 3003, 5082, 6082, 7003, 7005, 7075; Copper (optional) |
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Size |
Standard or fully customized |
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Colors |
Silver, black, blue, wood grain, RAL powder coating, etc. |
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Shape |
Round, square, flat, special profiles, or customized |
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Thickness |
0.4mm – 20mm or customized |
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Length |
Customized length up to 6000mm |
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Tolerance |
±0.01mm |
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Finish |
Anodizing, mill finish, electroplating, polishing, sandblasting, powder coating, silver plating, brushing, painting, PVDF |
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Production Process |
Extrusion → Cutting → CNC Machining (drilling, milling, tapping) → Deburring → Cleaning → Inspection → Packing |
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Deep Processing |
CNC, drilling, milling, cutting, stamping, welding, bending, assembly, custom aluminum fabrication |
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Application |
Automation equipment, LED lighting, inverters, welding machines, communications, power supplies, electronics, thermoelectric cooling, IGBT/UPS systems, automotive, architecture, marine, aerospace |
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MOQ |
Low MOQ, flexible for prototypes |
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OEM & ODM |
Available, engineering support for design optimization |
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Free Samples |
Available upon request |
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Delivery Time |
15–20 days after sample confirmation & deposit (longer lead time for high-strength alloys like 7075) |
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Packaging |
Standard export packaging |
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Port |
Guangzhou / Shenzhen Port |
Precision Engineered Components for Industry, Electronics & Architecture
Custom CNC machined aluminum extrusion profiles combine high‑efficiency extrusion forming with precision secondary machining, delivering ready‑to‑install components for automation equipment, electronic heat sinks, LED lighting, automotive systems, architectural frames, and industrial machinery.
Using high‑quality 6063/6061 aluminum alloy, advanced extrusion dies, and multi‑axis CNC processing, we produce profiles with tight tolerances, complex features, and consistent quality for projects of all sizes-from prototype development to large‑scale mass production.
- One-stop solution: extrusion + CNC machining + surface treatment
- Tight dimensional accuracy up to ±0.01mm for high‑precision assemblies
- Complex features: holes, slots, threads, milling, notching, bending, welding
- Flexible customization of shape, length, hole pattern, and surface finish
- Lightweight, high strength, corrosion resistant, and long service life
- Consistent batch quality for large‑volume orders
- Cost-effective compared to full CNC block machining
Alloy Comparison for CNC Machined Aluminum Extrusions
We offer a comprehensive range of aluminum alloys tailored to different application requirements-from decorative components to high-strength industrial parts. Below is a detailed comparison of the most commonly used alloys for CNC machined extrusions:
6063 Aluminum Extrusions
- Core Properties: Excellent extrudability, smooth surface finish, good corrosion resistance, and moderate strength.
- Machinability: Superior (ideal for complex cross-sections and precision machining).
- Key Advantages: Cost-effective, easy to anodize/powder coat, and suitable for low-to-moderate load applications.
- Typical Applications: Architectural frames, LED channels, decorative trims, lighting fixtures, and general-purpose brackets.
6061 Aluminum Extrusions
- Core Properties: Balanced strength, good thermal conductivity, and excellent weldability.
- Machinability: Very good (handles drilling, tapping, and milling with high precision).
- Key Advantages: Versatile alloy for structural and functional parts, better strength than 6063.
- Typical Applications: Industrial frames, automation equipment, heat sinks, automotive brackets, and power supply enclosures.
3003 Aluminum Extrusions
- Core Properties: High corrosion resistance, excellent formability, and good weldability.
- Machinability: Good (soft alloy, requires sharp tools for precision cuts).
- Key Advantages: Ideal for outdoor or harsh environments, low cost, and lightweight.
- Typical Applications: Chemical equipment, food processing parts, outdoor enclosures, and decorative panels.
5082 Aluminum Extrusions
- Core Properties: Superior corrosion resistance (especially seawater corrosion), high fatigue strength, and good formability.
- Machinability: Moderate (stronger than 3003, requires optimized machining parameters).
- Key Advantages: Suitable for marine and coastal applications, durable under harsh conditions.
- Typical Applications: Marine components, offshore equipment, outdoor structural parts, and chemical storage systems.
6082 Aluminum Extrusions
- Core Properties: High strength, excellent structural stability, and good machinability.
- Machinability: Very good (maintains precision even with complex machining).
- Key Advantages: Ideal for heavy-load and high-stress applications, better strength than 6061.
- Typical Applications: Industrial machinery frames, gantry systems, load-bearing structures, and automotive chassis parts.
7003 Aluminum Extrusions
- Core Properties: High strength-to-weight ratio, good corrosion resistance, and excellent extrudability for complex shapes.
- Machinability: Good (balances strength and processability).
- Key Advantages: Lightweight yet durable, suitable for high-performance structural parts.
- Typical Applications: Aerospace components, high-speed machinery, sports equipment, and precision automation frames.
7005 Aluminum Extrusions
- Core Properties: High strength, good fatigue resistance, and moderate corrosion resistance.
- Machinability: Moderate (requires careful tool selection to avoid work hardening).
- Key Advantages: Ideal for high-load, low-weight applications, better strength than 6082.
- Typical Applications: Automotive structural parts, aircraft components, industrial robots, and heavy-duty equipment brackets.
7075 Aluminum Extrusions
- Core Properties: Ultra-high strength (one of the strongest aluminum alloys), excellent mechanical performance.
- Machinability: Moderate (high hardness requires specialized machining tools and parameters).
- Key Advantages: Superior strength for critical load-bearing parts, suitable for extreme environments.
- Typical Applications: Aerospace components, military equipment, high-precision machinery, and heavy-industry structural parts.
Comprehensive Alloy Comparison Table
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Alloy |
Strength Level |
Machinability |
Extrusion Difficulty |
Corrosion Resistance |
Key Advantages |
Typical Applications |
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6063 |
Moderate |
Excellent |
Low |
Excellent |
Cost-effective, smooth surface, easy finishing |
Architecture, lighting, decorative parts |
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6061 |
Good |
Very Good |
Low-Medium |
Very Good |
Versatile, balanced strength/processability |
Industrial frames, heat sinks, automotive brackets |
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3003 |
Low |
Good |
Low |
Excellent |
Corrosion-resistant, low cost |
Outdoor enclosures, chemical equipment, panels |
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5082 |
Good |
Moderate |
Medium |
Superior |
Seawater corrosion resistance, fatigue strength |
Marine parts, offshore equipment, harsh environments |
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6082 |
High |
Very Good |
Medium |
Good |
High strength, structural stability |
Machinery frames, load-bearing structures, gantries |
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7003 |
High |
Good |
Medium |
Good |
High strength-to-weight ratio, complex extrusion |
Aerospace, high-speed machinery, automation |
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7005 |
Very High |
Moderate |
Medium-High |
Moderate |
High strength, fatigue resistance |
Automotive structural parts, industrial robots |
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7075 |
Ultra-High |
Moderate |
High |
Moderate |
Superior strength, extreme load capacity |
Aerospace, military equipment, precision machinery |
Customization Capabilities
We provide full‑cycle customization for custom CNC machined aluminum extrusion profiles:
✅️ Profile & Structure Customization
- Custom cross‑section design based on 2D / 3D drawings (STEP, IGS, CAD, PDF, DWG)
- Complex structural profiles with slots, grooves, mounting features
- Structural reinforcement for industrial and load-bearing applications (optimized for high-strength alloys)
✅️ Precision CNC Machining
- High‑precision drilling, tapping, milling, and countersinking
- Custom notching, cutting, and chamfering
- Complex pocketing, threading, and assembly machining
- Batch processing with consistent dimensional stability (tailored to alloy hardness)
✅️ Surface Treatment
- Anodizing (clear, black, color) for corrosion resistance and appearance (recommended for 6063/6061/3003)
- Powder coating in any RAL color (ideal for decorative and industrial parts)
- Hard anodizing (for high-wear applications with 6082/7005/7075)
- Sandblasting, brushing, polishing, and other custom finishes
✅️ Assembly & Fabrication
- Welding (TIG / MIG) – optimized for alloy compatibility (e.g., 6061/6082 weld well; 7075 requires specialized welding)
- Bending and forming (adjusted for alloy ductility)
- Full assembly of finished components
- Packaging for direct installation
Typical Applications
Custom CNC machined aluminum extrusion profiles are widely used across global industries, with alloy-specific use cases:
- Architecture & Furniture: 6063/3003 – Frames, doors, windows, trims, display systems (corrosion resistance + aesthetic finish)
- Automation & Machinery: 6061/6082 – Frames, guards, linear structures, mounting plates (strength + machinability)
- LED Lighting & Electronics: 6063/6061 – Heat sinks, channels, housings (thermal conductivity + cost-effectiveness)
- Automotive & EV: 6082/7005 – Battery components, structural brackets, cooling parts (high strength + lightweight)
- Marine & Offshore: 5082/3003 – Hulls, enclosures, structural parts (seawater corrosion resistance)
- Aerospace & High-Performance: 7003/7075 – Precision components, lightweight structures (ultra-high strength-to-weight ratio)
- Industrial Equipment: 6082/7005 – Welding machines, control panels, test fixtures (durability + load capacity)
Quality Control
We maintain strict quality control throughout production, with alloy-specific inspections:
- Raw material spectral inspection to verify alloy composition (critical for high-strength alloys like 7075)
- In‑line dimensional inspection during extrusion (adjusted for alloy flow characteristics)
- CNC machining precision verification (CMM inspection available for tight-tolerance parts)
- Surface finish adhesion and corrosion testing (salt spray testing for marine-grade alloys)
- Mechanical property testing (tensile strength, hardness) for high-strength alloys
- Full pre‑shipment inspection with quality report
- Batch traceability for all production records
Why Choose Our Custom CNC Machined Aluminum Extrusion Profiles
✅ Professional extrusion & CNC machining under one roof (alloy-specific process optimization)
✅ Precision tolerance down to ±0.01mm for critical components
✅ Wide alloy selection (6063/6061/3003/5082/6082/7003/7005/7075) to match any application
✅ Full engineering support for alloy selection and design optimization
✅ Low MOQ for prototypes, high capacity for mass production
✅ Stable quality and fast global delivery (alloy-specific lead time management)
✅ Competitive factory direct pricing
✅ ISO, CE, RoHS compliant for international markets
FAQ
Technical & Design Questions
1. How to select the right aluminum alloy for my CNC machined extrusion?
Choose based on your application requirements:
- Decorative/Architectural: 6063 (smooth finish, cost-effective) or 3003 (corrosion resistance)
- General Structural: 6061 (versatile, balanced strength)
- Marine/Harsh Environments: 5082 (seawater corrosion resistance)
- Heavy-Load Industrial: 6082 (high strength, structural stability)
- High-Performance/Lightweight: 7003/7005 (strength-to-weight ratio)
- Extreme Load/Critical Parts: 7075 (ultra-high strength)
2. What is the benefit of CNC machined aluminum extrusions vs. full CNC parts?
CNC machined extrusions offer much lower cost, faster production, and lighter weight while maintaining precision. They are ideal for structural parts, enclosures, frames, and heat sinks where full CNC machining from solid block is unnecessary-especially for large-volume orders.
3. How tight can you make tolerances for CNC machined extrusions?
We can hold tolerances as tight as ±0.01mm for critical machined features (e.g., mounting holes, threads) across all alloys. For ultra-high strength alloys like 7075, tolerance consistency is maintained via specialized machining tools and process controls.
4. Can you handle complex machining features for high-strength alloys (e.g., 7075)?
Yes. We use carbide tools and optimized machining parameters for high-strength alloys, supporting complex features like deep holes, fine threads, pocketing, and countersinking-ensuring precision without compromising alloy integrity.
5. What surface treatments are recommended for different alloys?
- 6063/6061/3003: Anodizing (enhances corrosion resistance and aesthetic)
- 5082/3003: Clear anodizing (preserves corrosion resistance for marine/offshore use)
- 6082/7005/7075: Hard anodizing (adds wear resistance for high-stress applications)
- Decorative Parts: Powder coating (RAL color matching, durable finish)
Production & Order Questions
6. What is your MOQ for custom CNC machined extrusions?
We accept low MOQ (starting from 50kg) for prototypes and small batches. For high-strength alloys like 7075 (which require specialized extrusion dies), MOQ is slightly higher (100kg) but still flexible for long-term partners.
7. How long is production lead time for different alloys?
- Standard alloys (6063/6061/3003): 15–20 days after sample confirmation
- Medium-strength alloys (5082/6082/7003): 20–25 days
- High-strength alloys (7005/7075): 25–30 days (due to specialized extrusion and heat treatment)
- Urgent orders: Accelerated lead time available for all alloys (contact us for details)
8. Do you offer free samples for custom alloys?
Yes, free samples are available for standard alloys (6063/6061/3003). For custom samples of high-strength alloys (7005/7075), a small fee is required (refundable with bulk orders ≥500kg).
9. Can you help optimize my design for specific alloys?
Absolutely. Our engineering team provides free DFM (Design for Manufacturability) analysis tailored to your chosen alloy-optimizing cross-sections for extrusion feasibility, machining efficiency, and cost reduction.
Logistics & After-Sales
10. Which ports do you ship from?
We ship from Guangzhou Port and Shenzhen Port, the most efficient ports for global exports-offering FOB/CIF/DDP shipping options.
11. How do you protect parts made of high-strength alloys during shipping?
High-strength alloys (7005/7075) are more prone to scratches, so we use enhanced packaging: EPE foam wrapping + anti-rust film + fumigation-free plywood crates with internal bracing. For precision parts, we add individual plastic sleeves to prevent damage.
12. What after-sales support do you provide for alloy-specific issues?
We provide:
- Technical support for installation and machining of alloy-specific parts
- 3-year warranty for material and workmanship defects (5-year warranty for high-strength alloys)
- Replacement of defective parts (verified via quality report and photos)
- Alloy selection consulting for future projects
Start Your Custom Project Today
Send us your 2D / 3D drawings or requirements, and we will provide a free quote, alloy selection recommendation, and design review within 24 hours.
Zhonglian Aluminum: Professional Custom CNC Machined Aluminum Extrusion Profiles – Precision You Can Trust
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