How to Select an Aluminum Extrusion Manufacturer in China
Updated: 19 Oct 2026
Selecting the right aluminum extrusion manufacturer in China is an important decision for importers, distributors, contractors and companies developing custom aluminum products.
China has many aluminum extrusion suppliers, but their manufacturing capabilities, product experience and processing services can vary considerably. Some focus on standard architectural profiles, while others specialize in custom extrusions, industrial components or finished aluminum parts.
When comparing manufacturers, price is only one consideration. Buyers should also evaluate die development, extrusion capacity, aluminum alloys, dimensional accuracy, surface finishing, CNC machining and quality control.
The best aluminum extrusion manufacturer is not necessarily the largest or cheapest. It is the one whose manufacturing capabilities match your product requirements.
Here are the key factors to consider when selecting a manufacturer in China.
An aluminum extrusion factory should be able to explain its production process, extrusion press capabilities, available profile sizes and manufacturing limitations.
Important factors include:
Extrusion production lines: The number and capacity of extrusion presses.
Profile dimensions: Whether the factory can produce your required cross-sectional size and wall thickness.
Production volume: Whether capacity is suitable for your order quantity and repeat purchasing requirements.
Material options: Available aluminum alloys and tempers.
Additional processing: Whether the factory can coordinate finishing and fabrication after extrusion.
For example, Shenghai Aluminum, established in 2010 in Foshan, China, operates seven aluminum extrusion production lines.
Its manufacturing capabilities cover architectural, furniture, decorative and industrial aluminum profiles, with additional surface finishing and fabrication services.
When evaluating any supplier, ask for factory photographs, production videos or a factory visit to better understand its actual manufacturing capabilities.
The extrusion die determines the cross-sectional shape of the finished aluminum profile. A poorly designed die can lead to dimensional problems, uneven material flow, surface defects or unnecessary production costs.
Before developing a new die, a manufacturer should review:
Profile dimensions and cross-sectional geometry
Wall thickness and thickness variations
Hollow or semi-hollow sections
Critical tolerances and assembly requirements
Aluminum alloy and temper
Expected production quantity
For example, an aluminum cabinet handle may require a specific gripping shape, while an industrial T-slot profile needs accurately designed grooves for compatible fasteners.
Shenghai Aluminum provides custom extrusion die development based on customer drawings, samples and application requirements.
Customers can submit their profile designs for technical review before tooling and trial production.
It is also worth checking whether the manufacturer already has a suitable extrusion die. Using an existing profile design may reduce tooling expenses, provided the dimensions and specifications meet your requirements.
Common materials used in aluminum extrusion manufacturing include:
Material selection should be based on the intended application rather than price alone.
For custom aluminum profiles, buyers should clearly specify the required alloy, temper, wall thickness and dimensional tolerances.
Cross-sectional dimensions and wall thickness
Profile straightness
Surface scratches and extrusion defects
Mechanical properties where required
Anodizing and powder coating quality
Color consistency
CNC machining dimensions
Hole positions and assembly fit
For example, aluminum cabinet frames require consistent dimensions and surface appearance, while industrial components may require closer control of critical machining features.
Before mass production, buyers should confirm the inspection criteria and approve samples when necessary.
After extrusion, profiles may need surface finishing, precision cutting, drilling, milling, tapping or other fabrication processes.
Choosing a manufacturer that can coordinate these operations can reduce the number of suppliers involved in your project.
Aluminum Surface Finishing
Shenghai Aluminum offers several surface finishing options, including:
Surface treatment should be selected according to the required appearance, operating environment and product specifications.
For example, anodized aluminum is commonly used for decorative cabinet profiles, while powder coating offers a broad selection of colors for architectural applications.
Precision cutting
CNC milling
Drilling and tapping
Punching
Bending
Welding
Other custom machining operations
These services are useful for aluminum components that require additional processing before assembly.
For example, an extruded aluminum enclosure may need CNC-machined openings, mounting holes and threaded connections.
By combining extrusion, surface finishing and fabrication, buyers can simplify production coordination and reduce the need to transfer components between multiple suppliers.
Review the Manufacturer's Product Experience
A manufacturer's existing product range can help buyers understand its experience with different extrusion shapes, applications and manufacturing requirements.
A factory specializing in decorative profiles may have different experience from one producing industrial components or architectural systems.
Before selecting a supplier, check whether it has manufactured products similar to yours.
These product categories demonstrate the variety of aluminum extrusion applications supported by Shenghai Aluminum.
You can explore the company's aluminum profile applications and product catalog for additional designs and specifications.
For custom projects, customers can provide drawings or samples to confirm manufacturing feasibility, available tooling and production requirements.
When comparing aluminum extrusion manufacturers in China, buyers should consider more than the quoted price per kilogram.
A custom aluminum profile may involve several cost components:
Aluminum material and extrusion
Custom die development
Surface finishing
CNC machining or other fabrication
Quality inspection
Packaging and transportation
For example, one supplier may offer a lower extrusion price but require buyers to arrange CNC machining separately.
Another manufacturer may provide extrusion, finishing and machining together, potentially reducing transportation and handling costs.
Minimum order quantity also depends on the product.
Existing profiles may have different MOQ requirements from newly developed custom extrusions.
For custom projects, lead time generally includes:
Drawing Review → Die Development → Trial Extrusion → Sample Approval → Mass Production → Surface Finishing → CNC Machining → Inspection → Packaging
Before confirming an order, ask the manufacturer to clarify the tooling cost, minimum quantity, sample schedule and estimated production lead time.
Comparing quotations based on the same specifications and scope of supply will help you make a more accurate purchasing decision.
A reliable manufacturer should be able to understand technical drawings, clarify dimensions, discuss manufacturing feasibility and explain production requirements.
For international orders, buyers should also confirm:
Export packaging methods
Shipping terms such as FOB or CIF
Product protection during transportation
Required export documents
Production and shipment coordination
Long aluminum profiles and decorative finishes require appropriate packaging to reduce the risk of damage during shipping.
Shenghai Aluminum supplies aluminum extrusion products to overseas markets and supports international buyers with custom profile manufacturing and export coordination.
Its manufacturing services cover several important stages of aluminum profile production.
Custom Die Development
Custom extrusion dies can be developed according to customer drawings, samples and product requirements.
Seven Extrusion Production Lines
The factory operates seven aluminum extrusion lines to support a variety of profile designs and production requirements.
Surface Finishing
Anodizing, powder coating and other finishing options are available for architectural, furniture and industrial applications.
CNC Machining and Fabrication
Cutting, drilling, milling, tapping, bending and other secondary processing services can be provided according to project specifications.
Wide Product Experience
From aluminum window frames and cabinet handles to decorative trims, industrial profiles and electronic enclosures, Shenghai Aluminum has developed a broad product range for different industries.
For buyers who require custom extrusion together with finishing and machining, coordinating these services through one manufacturer can simplify purchasing and production management.
2D or 3D drawing, or a physical sample
Profile dimensions and wall thickness
Aluminum alloy and temper
Surface finish and color
Required profile length
Critical dimensional tolerances
CNC machining or fabrication requirements
Estimated order quantity
Intended application and destination country
If you do not have a finalized drawing, you can provide a sample or preliminary design for discussion.
Looking for an aluminum extrusion manufacturer in China?
Contact Shenghai Aluminum to discuss your custom aluminum profile requirements, tooling, extrusion, surface finishing and CNC machining needs.
China has many aluminum extrusion suppliers, but their manufacturing capabilities, product experience and processing services can vary considerably. Some focus on standard architectural profiles, while others specialize in custom extrusions, industrial components or finished aluminum parts.
When comparing manufacturers, price is only one consideration. Buyers should also evaluate die development, extrusion capacity, aluminum alloys, dimensional accuracy, surface finishing, CNC machining and quality control.
The best aluminum extrusion manufacturer is not necessarily the largest or cheapest. It is the one whose manufacturing capabilities match your product requirements.
Here are the key factors to consider when selecting a manufacturer in China.
Check the Manufacturer's Factory and Extrusion Capacity
Start by verifying the supplier's manufacturing facilities and production equipment.An aluminum extrusion factory should be able to explain its production process, extrusion press capabilities, available profile sizes and manufacturing limitations.
Important factors include:
Extrusion production lines: The number and capacity of extrusion presses.
Profile dimensions: Whether the factory can produce your required cross-sectional size and wall thickness.
Production volume: Whether capacity is suitable for your order quantity and repeat purchasing requirements.
Material options: Available aluminum alloys and tempers.
Additional processing: Whether the factory can coordinate finishing and fabrication after extrusion.
For example, Shenghai Aluminum, established in 2010 in Foshan, China, operates seven aluminum extrusion production lines.
Its manufacturing capabilities cover architectural, furniture, decorative and industrial aluminum profiles, with additional surface finishing and fabrication services.
When evaluating any supplier, ask for factory photographs, production videos or a factory visit to better understand its actual manufacturing capabilities.
Evaluate Custom Die Design and Tooling Capabilities
For custom aluminum extrusion projects, die design is one of the most important manufacturing stages.The extrusion die determines the cross-sectional shape of the finished aluminum profile. A poorly designed die can lead to dimensional problems, uneven material flow, surface defects or unnecessary production costs.
Before developing a new die, a manufacturer should review:
Profile dimensions and cross-sectional geometry
Wall thickness and thickness variations
Hollow or semi-hollow sections
Critical tolerances and assembly requirements
Aluminum alloy and temper
Expected production quantity
For example, an aluminum cabinet handle may require a specific gripping shape, while an industrial T-slot profile needs accurately designed grooves for compatible fasteners.
Shenghai Aluminum provides custom extrusion die development based on customer drawings, samples and application requirements.
Customers can submit their profile designs for technical review before tooling and trial production.
It is also worth checking whether the manufacturer already has a suitable extrusion die. Using an existing profile design may reduce tooling expenses, provided the dimensions and specifications meet your requirements.
Confirm Aluminum Alloy Selection and Quality Control
Different aluminum alloys offer different combinations of strength, extrudability, corrosion resistance and surface finishing performance.Common materials used in aluminum extrusion manufacturing include:
|
Aluminum Alloy |
Common Applications |
|
6063-T5 |
Windows, doors, furniture, cabinet profiles and decorative trims |
|
6063-T6 |
Architectural and industrial profiles requiring different strength properties |
|
6061-T6 |
Industrial components, machined parts and structural applications |
|
6005 / 6005A |
Solar mounting systems and structural profiles |
|
6082-T6 |
Engineering and higher-strength structural applications |
Material selection should be based on the intended application rather than price alone.
For custom aluminum profiles, buyers should clearly specify the required alloy, temper, wall thickness and dimensional tolerances.
What Should You Check During Quality Inspection?
Quality requirements vary by product, but common inspection items include:Cross-sectional dimensions and wall thickness
Profile straightness
Surface scratches and extrusion defects
Mechanical properties where required
Anodizing and powder coating quality
Color consistency
CNC machining dimensions
Hole positions and assembly fit
For example, aluminum cabinet frames require consistent dimensions and surface appearance, while industrial components may require closer control of critical machining features.
Before mass production, buyers should confirm the inspection criteria and approve samples when necessary.
Look for Surface Finishing and CNC Machining Capabilities
Many aluminum products require more than extrusion.After extrusion, profiles may need surface finishing, precision cutting, drilling, milling, tapping or other fabrication processes.
Choosing a manufacturer that can coordinate these operations can reduce the number of suppliers involved in your project.
Aluminum Surface Finishing
Shenghai Aluminum offers several surface finishing options, including:
|
Surface Treatment |
Typical Applications |
|
Anodizing |
Cabinet handles, decorative profiles, industrial parts |
|
Powder Coating |
Doors, windows, furniture and architectural profiles |
|
Electrophoresis |
Decorative and architectural aluminum profiles |
|
Wood-Grain Finish |
Furniture, doors and interior decoration |
|
Brushing / Polishing |
Handles, trims and decorative components |
|
PVDF Coating |
Exterior architectural applications requiring weather-resistant finishes |
Surface treatment should be selected according to the required appearance, operating environment and product specifications.
For example, anodized aluminum is commonly used for decorative cabinet profiles, while powder coating offers a broad selection of colors for architectural applications.
CNC Machining and Secondary Fabrication
Shenghai Aluminum also provides aluminum fabrication services, including:Precision cutting
CNC milling
Drilling and tapping
Punching
Bending
Welding
Other custom machining operations
These services are useful for aluminum components that require additional processing before assembly.
For example, an extruded aluminum enclosure may need CNC-machined openings, mounting holes and threaded connections.
By combining extrusion, surface finishing and fabrication, buyers can simplify production coordination and reduce the need to transfer components between multiple suppliers.
Review the Manufacturer's Product Experience
A manufacturer's existing product range can help buyers understand its experience with different extrusion shapes, applications and manufacturing requirements.
A factory specializing in decorative profiles may have different experience from one producing industrial components or architectural systems.
Before selecting a supplier, check whether it has manufactured products similar to yours.
What Aluminum Profiles Does Shenghai Aluminum Manufacture
Shenghai Aluminum's product catalog covers several major application categories.|
Product Category |
Typical Aluminum Profiles |
|
Doors & Windows |
Sliding and casement window profiles, door frames, folding door profiles, thermal break profiles, curtain wall sections, roller shutter profiles |
|
Decorative & Construction |
Aluminum tile trims, L/T/U-shaped edge trims, skirting boards, stair nosing, ceiling profiles, curtain tracks, picture frames |
|
Furniture & Cabinets |
Kitchen cabinet profiles, wardrobe frames, G/C/J profile handles, aluminum furniture frames, wardrobe hanging rails |
|
Industrial Profiles |
T-slot aluminum profiles, machine frames, aluminum channels, angles, tubes and custom industrial sections |
|
Electronic & Mechanical |
Aluminum heat sinks, extruded enclosures, CNC-machined aluminum components |
|
Solar Applications |
Solar panel frames, mounting rails, clamps and related aluminum profiles |
|
Other Applications |
LED aluminum channels, office partition profiles, handrail sections, aquarium frames and custom aluminum accessories |
These product categories demonstrate the variety of aluminum extrusion applications supported by Shenghai Aluminum.
You can explore the company's aluminum profile applications and product catalog for additional designs and specifications.
For custom projects, customers can provide drawings or samples to confirm manufacturing feasibility, available tooling and production requirements.
Compare MOQ, Lead Time and Total Manufacturing Costs
When comparing aluminum extrusion manufacturers in China, buyers should consider more than the quoted price per kilogram.
A custom aluminum profile may involve several cost components:
Aluminum material and extrusion
Custom die development
Surface finishing
CNC machining or other fabrication
Quality inspection
Packaging and transportation
For example, one supplier may offer a lower extrusion price but require buyers to arrange CNC machining separately.
Another manufacturer may provide extrusion, finishing and machining together, potentially reducing transportation and handling costs.
Minimum order quantity also depends on the product.
Existing profiles may have different MOQ requirements from newly developed custom extrusions.
For custom projects, lead time generally includes:
Drawing Review → Die Development → Trial Extrusion → Sample Approval → Mass Production → Surface Finishing → CNC Machining → Inspection → Packaging
Before confirming an order, ask the manufacturer to clarify the tooling cost, minimum quantity, sample schedule and estimated production lead time.
Comparing quotations based on the same specifications and scope of supply will help you make a more accurate purchasing decision.
Check Communication and Export Experience
Clear communication is particularly important when sourcing custom aluminum profiles from overseas.A reliable manufacturer should be able to understand technical drawings, clarify dimensions, discuss manufacturing feasibility and explain production requirements.
For international orders, buyers should also confirm:
Export packaging methods
Shipping terms such as FOB or CIF
Product protection during transportation
Required export documents
Production and shipment coordination
Long aluminum profiles and decorative finishes require appropriate packaging to reduce the risk of damage during shipping.
Shenghai Aluminum supplies aluminum extrusion products to overseas markets and supports international buyers with custom profile manufacturing and export coordination.
Why Consider Shenghai Aluminum as Your Extrusion Manufacturer
Shenghai Aluminum is a Foshan-based aluminum extrusion manufacturer with experience in architectural, decorative, furniture and industrial aluminum profiles.Its manufacturing services cover several important stages of aluminum profile production.
Custom Die Development
Custom extrusion dies can be developed according to customer drawings, samples and product requirements.
Seven Extrusion Production Lines
The factory operates seven aluminum extrusion lines to support a variety of profile designs and production requirements.
Surface Finishing
Anodizing, powder coating and other finishing options are available for architectural, furniture and industrial applications.
CNC Machining and Fabrication
Cutting, drilling, milling, tapping, bending and other secondary processing services can be provided according to project specifications.
Wide Product Experience
From aluminum window frames and cabinet handles to decorative trims, industrial profiles and electronic enclosures, Shenghai Aluminum has developed a broad product range for different industries.
For buyers who require custom extrusion together with finishing and machining, coordinating these services through one manufacturer can simplify purchasing and production management.
What Information Should You Send for a Custom Aluminum Extrusion Quote
To help a manufacturer evaluate your project, prepare the following information:2D or 3D drawing, or a physical sample
Profile dimensions and wall thickness
Aluminum alloy and temper
Surface finish and color
Required profile length
Critical dimensional tolerances
CNC machining or fabrication requirements
Estimated order quantity
Intended application and destination country
If you do not have a finalized drawing, you can provide a sample or preliminary design for discussion.
Looking for an aluminum extrusion manufacturer in China?
Contact Shenghai Aluminum to discuss your custom aluminum profile requirements, tooling, extrusion, surface finishing and CNC machining needs.
