Metal Extrusion | China Manufacturer & Supplier

Custom Metal Extrusion at YiguProto China Factory — Metal Extrusion at YiguProto: precision, speed, and quality from one China supplier

Finding a trustworthy metal extrusion company in China is hard. You worry about quality, delays, and hidden costs. At YiguProto, we remove those worries.

We are a China manufacturer and supplier with our own factory. From your first CAD file to the finished part, you deal with one accountable team. No middlemen. No surprises.

Factory-direct pricing — no agent markup
Free DFM review before you place an order
Strict QC on every batch, with full inspection reports
On-time delivery backed by our production planning team

Upload Your Files & Quote Ask Our Engineers

What Is Metal Extrusion?

Metal Extrusion Process: Simple to Understand

Metal extrusion is a manufacturing process where a metal billet is pushed through a shaped die under high pressure. The metal takes the shape of the die opening. The result is a long part with a uniform cross-section — called an extruded profile.

Think of it like squeezing toothpaste through a shaped nozzle. The paste always comes out in the shape of the hole. Extrusion works the same way, but with solid metal and extreme force.

This process is ideal for making long parts with a constant cross-section: rods, tubes, channels, rails, frames, and enclosures. If your part has the same shape along its length, extrusion is often the most cost-effective way to make it.

Metal Extrusion Process Diagram - Billet pushed through die — Metal billet is pushed through a die to form the extruded profile

4 Steps from Raw Metal to Finished Part

1

Design & Tooling

We design the die based on your CAD file. The die is the heart of the process — it defines your profile.

2

Heating & Extrusion

The metal billet is heated and pushed through the die at high pressure, forming the profile.

3

Cooling & Straightening

The hot profile is quenched, then straightened to remove bends or twists.

4

Cutting & Finishing

Cut to your required length, then anodized, powder coated, or machined as needed.

Direct (Forward) Extrusion

The most common method. A ram pushes the billet through a container. The metal flows in the same direction as the ram, exiting through a stationary die.

✅ Supports larger profile sizes
✅ Better surface finish
⚠️ More friction = higher energy use

Indirect (Backward) Extrusion

The die moves toward the billet with a hollow ram. The metal flows in the opposite direction of the ram motion.

✅ Less friction, less heat
✅ Better dimensional control
⚠️ Smaller die size limit

Hot, Warm & Cold Extrusion

The difference is temperature. Hot = above recrystallization. Warm = between room temp and recrystallization. Cold = room temperature.

✅ Hot: easier flow, less die wear
✅ Cold: harder, stronger parts
✅ Warm: balanced properties

Process

Aluminum extrusion (primary), Copper, Steel, Brass available

Profile Types

Solid, semi-hollow, hollow, multi-cavity

Tolerance

±0.1 mm (standard), tighter on request

Wall Thickness

As thin as 0.8 mm for aluminum

CCD

Up to 300 mm circumscribed circle diameter

Max Length

Cut to any length up to 6 meters

Lead Time

10–20 business days (tooling + first article)

Order Quantity

No MOQ — from prototype to full production

Post-Machining

CNC milling, drilling, tapping, bending

Solid Profiles

Rods and bars
Angles (L-shape)
T-bars, Z-bars, I-beams
Flat bars and strips

Hollow Profiles

Round tubes and pipes
Rectangular & square tubes
Multi-cavity profiles
T-slot and 80/20 framing

Semi-Hollow Profiles

U-channels and J-channels
Hat channels
Window and door frames
Trim and edge guards

💡 Pro tip: If you need a small batch with extra holes or slots, we can often start with a standard profile and CNC machine the rest. This saves the cost of a custom die. Ask us if this works for your part →

Aluminum 6063

Properties: Excellent surface finish, easy to anodize
Uses: Window frames, door frames, decorative trim

Aluminum 6061

Properties: High strength, good weldability
Uses: Structural frames, automotive, marine

Aluminum 6082

Properties: Stronger than 6061, good corrosion resistance
Uses: Bridges, cranes, transport

Aluminum 7075

Properties: Very high strength (aircraft grade)
Uses: Aerospace, high-stress parts

Copper

Properties: High electrical & thermal conductivity
Uses: Bus bars, heat sinks, electrical

Brass

Properties: Corrosion resistant, decorative finish
Uses: Architectural, marine fittings

Steel

Properties: High strength, durable
Uses: Heavy structural, industrial

Magnesium

Properties: Ultra-lightweight
Uses: Aerospace, automotive, electronics

Need a different alloy? We support custom material requests. Contact us with your specs.

As-Extruded (Mill Finish)

Left as-is after extrusion. Surface roughness typically 64–125 µin Ra. May show slight grain lines or color streaks.

Anodizing (Type II / III)

Corrosion-resistant oxide layer. Type II is standard; Type III is thicker for wear resistance. Colors: clear, black, red, gold.

Powder Coating

Electrostatically sprayed powder, then baked. Tough, durable finish in any color. More resistant than wet paint.

Wet Painting

Liquid paint in custom colors. Provide your paint brand and code for exact matching.

Plating

Nickel, chrome, tin, brass, silver, or gold plating for conductivity or corrosion resistance.

Chemical Film (Chromate)

Thin conversion coating. Protects aluminum while keeping it electrically conductive. Great base for paint.

Don't see the finish you need? Select "custom" in our quoting system and tell us what you need.

✈️ Aerospace
Structural components, seat rails, cargo tracks

🚗 Automotive
Bumper beams, roof rails, battery enclosures

🏗️ Construction
Window frames, curtain walls, handrails

💡 Electronics
LED housings, heat sinks, enclosures

🤖 Robotics
Framing, linear guides, mounting rails

🏭 Industrial
Conveyor frames, machine guards, racking

⚓ Marine
Corrosion-resistant rails, fittings

🍽️ Consumer Goods
Appliance trim, furniture frames, sporting goods

1

Keep Wall Thickness Uniform

Uneven walls cause warping. Try to keep all walls within a 2:1 thickness ratio. Use generous radii to transition between thick and thin areas.

2

Avoid Sharp Internal Corners

Sharp corners create stress points in the die and can cause cracking. Use rounded internal corners wherever possible.

3

Watch Your CCD

CCD = the smallest circle that fits around your profile. Standard presses handle up to 200 mm CCD. Larger profiles need bigger (and costlier) presses.

4

Add Ribs, Not Wide Thin Sections

Wide, thin sections are hard to keep flat. Adding ribs improves stiffness and reduces twisting after extrusion.

5

Strengthen Hollow Sections with Webs

Hollow shapes are delicate to produce. Internal webs add strength and make the die more stable.

Send Us Your Design for Free DFM Review

✅ Advantages

Low cost per part at high volumes
Complex shapes made in one pass
Excellent strength from grain flow
Recyclable — aluminum scrap has value
Long lengths without joints or seams

⚠️ Limitations to Consider

Die cost makes small batches less economical
Wall thickness has a practical minimum
Not ideal for parts that change shape along length
Lead time includes tooling (typically 2–3 weeks)

Not sure if extrusion is the best method? Talk to our engineers — we'll compare extrusion vs. CNC vs. die casting for your specific part at no cost.

Own Factory, Direct Pricing

We manufacture in-house. You pay factory-direct prices with no agent or trading company markup.

ISO-Certified Quality

ISO 9001:2015 certified processes. Full material certificates, inspection reports, and traceability on every order.

Fast Quotes, Fast Delivery

Most quotes returned within 24 hours. Tooling to first article in 10–20 business days.

One-Stop Solutions

Extrusion + CNC machining + finishing + assembly. One supplier, one invoice, one accountable team.

Global Shipping

Door-to-door delivery to 50+ countries. Full export documentation, insurance, and tracking included.

Confidential & Secure

NDAs available. Your designs are never shared. We treat your IP with the same care as our own.

1

Upload Your Design

Send STEP, STP, IGES, STL, DWG, DXF, or a simple PDF sketch. Tell us quantity, material, and finish.

2

Get Your Quote in 24h

Our engineers review your file, run a free DFM check, and send a clear, itemized quote — no hidden fees.

3

Approve & We Manufacture

We build the die, produce samples for your approval, then run full production with in-process QC.

4

Receive Your Parts

Global shipping with full tracking. Every order includes inspection reports and material certificates.

Start Your Metal Extrusion Quote Now

Supported formats: STEP · STP · IGES · STL · DWG · DXF · PDF · X_T · SAT · 3MF
All uploads are secure and confidential.

How fast can you make a quote?

Send your drawings or 3D files. Most quotes come back within a few hours on business days, never more than 24 hours.

Do you keep my files confidential?

Yes. All customer files and ideas are treated as confidential. We sign NDAs when needed.

Can you help with design for manufacturing (DFM)?

Yes. Our engineers review your design and suggest changes that cut cost, improve quality, or speed up delivery.

What is your minimum order quantity (MOQ)?

For Metal Extrusion, we support one-off prototypes and full production runs. There is no strict MOQ.

Do you offer free samples?

We can make samples for your approval. The sample cost is credited back when you place a production order.

What is your lead time for Metal Extrusion?

Tooling takes 10–20 business days. After tooling approval, production lead time is 7–15 business days depending on quantity and complexity.

Can you handle low and high volumes?

Yes. We support one-off prototypes, small bridge runs, and full production volumes from the same process.

Who owns the tooling / die?

You do. The die is your property. We store it safely and can re-run parts anytime you need a reorder.

What tolerances can you hold?

Standard extrusion tolerance is ±0.1 mm. Tighter tolerances are possible with post-machining. We follow ISO 2768 medium or your custom drawing specs.

Do you provide material certificates?

Yes. We provide material certificates (MTC) and full inspection reports with every shipment.

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