Aluminum Extrusion from Foshan: What Importers Need to Know

Foshan, Guangdong is China's undisputed aluminum capital. The city and its surrounding districts (Nanhai, Shunde, Sanshui) produce over 40% of China's aluminum profiles. If you need custom aluminum extrusions — for construction, industrial equipment, electronics enclosures, or consumer products — Foshan is where the world sources them.

Here's what you need to know before placing your first order.

Why Foshan for Aluminum?

Foshan's aluminum cluster has been building for 30+ years. Today it offers:

• 800+ aluminum extrusion factories
• Complete supply chain from billets to finished, anodized profiles
• Every alloy series (1000-7000) readily available
• Massive production capacity — some factories run 50+ extrusion presses
• Competitive pricing from cluster economics and scale

Understanding Aluminum Extrusions

What Is Extrusion?

Aluminum extrusion is like pushing Play-Doh through a shaped die. A heated aluminum billet is forced through a steel die to create a profile with a consistent cross-section. The result can be cut to any length.

Common Applications

• Window and door frames
• Curtain wall systems
• Heat sinks for electronics
• LED lighting housings
• Solar panel frames
• Machine frames and rails
• Furniture components
• Custom enclosures

What You Need to Specify

To get an accurate quote from a Foshan factory, prepare:

1. Profile Drawing

A 2D cross-section drawing with dimensions. Include: - All measurements in millimeters - Wall thickness (minimum 0.8mm for most alloys) - Tolerances for critical dimensions - Corner radii

2. Alloy Selection

Common choices: - **6063-T5**: Most popular for architectural profiles. Good surface finish, easy to anodize. Lower strength. - **6061-T6**: Higher strength, good for structural applications. Slightly harder to get perfect surface finish. - **6082-T6**: European favorite for structural work. Similar to 6061 but better corrosion resistance. - **7075-T6**: Aerospace-grade strength. Expensive, harder to extrude.

If you're unsure, 6063-T5 is the safe default for most applications.

3. Surface Treatment

Options from Foshan factories: - **Mill finish**: Raw aluminum, no treatment. Cheapest. - **Anodizing**: 10-25 micron oxide layer. Silver, black, champagne, bronze colors. Most popular. - **Powder coating**: Any RAL color. 60-80 micron thickness. Good for outdoor use. - **PVDF coating**: Premium weather resistance. 25-year color warranty. For curtain walls. - **Wood grain transfer**: Looks like wood, performs like aluminum. Popular for doors/windows. - **Electrophoresis**: Combines anodizing with paint. Excellent corrosion resistance.

4. Quantity & Length

• Standard cut length: 6 meters (can be custom cut)
• Minimum order: typically 500kg-1 ton per profile (some factories accept 200kg)
• Die cost: $300-800 for a new die (one-time, you own it)

Pricing Guide

Approximate FOB Foshan pricing (2024):

• Raw aluminum ingot price: ~$2,400/ton (fluctuates with LME)
• Extrusion processing fee: $800-1,500/ton (depends on complexity)
• Anodizing: $300-600/ton
• Powder coating: $400-800/ton

Total for a standard anodized 6063 profile: roughly $3,500-4,500/ton FOB.

Complex profiles with tight tolerances or special alloys will be higher.

Common Mistakes Importers Make

1. Not Accounting for Die Cost

Your first order includes a die charge ($300-800). This is a one-time cost — the die belongs to you and the factory stores it for reorders. Factor this into your unit economics for the first batch.

2. Ignoring Minimum Wall Thickness

Thinner walls = less material = cheaper. But go too thin and the profile warps during extrusion or can't hold tolerances. For 6063: - Minimum practical wall: 1.0mm - Recommended minimum: 1.2mm - Below 0.8mm: very difficult, high scrap rate

3. Specifying the Wrong Alloy

6061 when you need 6063 (or vice versa) is a common and expensive mistake. 6063 extrudes more easily and gives better surface finish. 6061 is stronger but harder to anodize evenly. Match the alloy to your actual requirements.

4. Not Testing Anodizing Quality

Cheap anodizing looks fine initially but fails within months outdoors. Specify the oxide layer thickness (15 micron minimum for outdoor use) and request a salt spray test report.

5. Forgetting About Packaging

Aluminum profiles scratch easily during shipping. Specify: - Protective film on visible surfaces - Foam separators between profiles - Proper bundling and crating for sea freight

How to Find a Good Foshan Factory

Look for: - ISO 9001 certified (minimum) - Qualicoat or Qualanod certification (for surface treatment quality) - In-house anodizing/powder coating line (not outsourced) - Willingness to send material test reports - Clear communication about lead times (typically 15-25 days)

How I Can Help

I'm based in Guangdong with verified relationships across Foshan's aluminum cluster. I can:

• Get you quotes from 3+ factories within 48 hours
• Review your profile drawings for manufacturability
• Arrange samples and prototype runs
• Inspect surface treatment quality before shipping
• Handle logistics from factory to your port

Send me your profile drawing — first quote is free, no commitment.