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Custom Aluminum Extrusion Services
Our Aluminum Extrusion services offer high quality, precision-engineered profiles in numerous applications. Working with prototypes or high-volume production, we can provide you with fast, cost-effective solutions, with tight tolerances, and high material strength.
- Tight Tolerances: Achieve precision profiles with tolerances as tight as ±0.1mm.
- Quick Turnaround: Rapid production of prototypes and low-volume parts, delivered in 5–7 days.
- Certified Quality: ISO 9001:2015, ISO 13485, ISO 16949, and ISO 14001 certified facilities ensure top-tier quality standards.
Lewei Precision Aluminum Extrusion Services
At Lewei Precision, we offer professional custom aluminum extrusion services for prototypes, small-batch production, and full-scale manufacturing. Our capabilities cover a wide range of profile cross-sections, delivering parts tailored to your design, function, and cost requirements.
Our extrusion workshops are equipped with 70+ press lines ranging from 600 to 3800 tons, giving us the ability to handle projects of different shapes, complexities, and volumes. Every production facility is ISO 9001:2015 certified, ensuring consistent quality and reliability across industries.
Aluminum Extrusion Process & Capabilities at Lewei Precision
Lewei Precision seeks to offer a complete aluminum extrusion procedure aimed at precision, durability, and versatility. Our skilled workforce guarantees quality output in case of custom die production to final finishing of products even after extrusion, applicable in a broad variety of projects. Regardless of your scale of operations, be it the small prototype of extrusions or the big production lines, we provide you with accuracy extrusion.
We have expertise in the manufacturing of both simple and complex extrusion dies, which are accurate and durable to a range of profiles.
The billet preheating process makes our billet precise and the temperature is controlled more precisely to achieve high extrusion consistency which enhances overall performance of a part.
We employ both direct and indirect extrusions, depending on what is the most appropriate to your aluminum profile and design requirements.
Once extruded, parts are cooled and cut to size with high precision to meet your specifications.
Aluminum Extrusion Finishes at Lewei Precision
We provide a range of the finishing types to aluminum extrusions to make them look good, durable, and functional. Finishing solutions that meet the unique requirements of your project are available in any combination of corrosion resistance, professional appearance, and added strength.
Anodized finishes that resist corrosion in various colors, which is suitable where the life and appearance of aluminum parts need to be improved.
Extra strong, durable powder coatings in any color or texture, ideal when a good coating is needed to withstand the outside elements such as extreme wear, corrosion and UV effects.
Electrocoating to increase durability, offer a high level of corrosion resistance and a high quality and smooth surface.
A uniform finish over the parts, with a linear texture that gives a satin effect, which is the best finish to use in both aesthetic and functional purposes.
You require unique finishes that match your specifications and we provide custom finishes that match your specifications in appearance and performance.
It is the perfect finish on steel-related parts; it not only improves the part corrosion resistance but also has a high-quality and professional look.
Aluminum Extrusion Services for Various Industries
In Lewei Precision, we offer aluminum extrusion services to the diverse industries. We work with individual designers, engineers, and manufactures in large scale producing quality and highly engineered aluminum extrusions that fit the precise specifications to the industry.
Aluminum Extrusion vs. CNC Machining vs. Injection Molding
Your project’s complexity, volume, and material requirements will determine the most effective manufacturing method. Below is a comparison to help you choose the right process for your needs.
| VS | Aluminum Extrusion | CNC Machining | Injection Molding |
|---|---|---|---|
| Tooling Cost | Low, requires only a die for extrusion | High, requires specialized tools and setups for each part | High, requires expensive molds (aluminum or steel) |
| Lead Time | 5–7 days for prototypes and low-volume production | 1–2 weeks, depending on part complexity | 4–12 weeks for mold setup and production |
| Part Quantity | 1–10,000+ parts optimal, scalable for high-volume production | 1–100+ parts, cost increases for larger quantities | 1,000+ parts optimal for mass production |
| Tolerance | ±0.1 mm, high precision for most profiles | ±0.01 mm, very high precision but more time-consuming | ±0.05–0.1 mm, highly accurate for large-volume parts |
| Surface Finish | Variety of finishes, including anodizing and powder coating | Smooth finishes possible, may require post-processing | Smooth, production-ready surface finish |
| Complex Geometry | Great for continuous, complex cross-sections | Excellent for precise, intricate geometries | Limited by mold design, handles undercuts and fine details |
| Material Options | Wide range of aluminum alloys for strength and durability | Materials based on machine capabilities (metal, plastic) | Limited to thermoplastics and some elastomers |
| Design Changes | Easy to implement design changes with minimal cost impact | Challenging to modify, requires new setups and tools | Expensive to modify molds once they are created |
How to Get Started with Aluminum Extrusion
Request a Quote
Upload your CAD files to receive an immediate, precise quote on an aluminum extrusion project. Our team will study your specifications and make a detailed estimate in a short time.
Die Design Approval
Upon approval of the quote we will work on the die design. You will be able to look at the design and approve before production is done so that it is according to your standards.
Production & Delivery
When a die is approved we start the extrusion process. Your custom extruded parts will be delivered punctually, to the highest quality requirements, to carry you into the next stage of production.
Certified Quality Control and Testing at Lewei Precision
In Lewei Precision, precision and quality is a core principle throughout the aluminum extrusion process. We perform the inspection process with high standards by using the latest inspection equipment to provide our parts with the best dimensional accuracy, such as Coordinate Measuring Machines (CMM). Our stringent validation procedure is such that each part has been measured and tested of the required standards such as ISO 2768-mK and ASME Y14.5 which ensures that all your custom extrusions are of the utmost of dimensions and geometric accuracy.
The quality of the surface is also of attention to us in measuring the roughness of the surface of the part, the values of Ra are in the range of 3.2 to 0.8 μm. We also check the thickness of the coating to compare the quality of the coating during production. So that we offer transparency and traceability, we keep excellent documentation, such as certificates of materials used and comprehensive inspection reports, such that no part can be untraceable and that each part is manufactured to your precise requirements with the confidence of having the correct one.
Order Your Aluminum Extrusion Profiles
For applications that require basic shapes, strength, and cost efficiency, standard extruded aluminum profiles are the most practical choice. At Lewei Precision, we supply a wide variety of commonly used aluminum extrusions, giving you an affordable and reliable solution for general-purpose projects.
- Aluminum flat bar
- Aluminum G-profile
- Extruded aluminum channel
- Aluminum I-beam
- Y-section aluminum extrusion
- Oval aluminum extrusion
- Square aluminum extrusion
When standard aluminum profiles can’t meet your design or performance needs, Lewei Precision’s custom extrusions are the answer. We offer both standard and fully customized profiles to support diverse industries with affordable pricing and reliable quality.
Our engineers review your drawings, validate feasibility, and choose the most efficient process — ensuring high precision and short lead times.
- Accessories and connectors
- Structural construction profiles
- Aluminum channels
- T-slot profiles
Materials for Custom Aluminum Extrusion
We offer a range of aluminum alloys, each selected for strength, machinability, corrosion resistance, and finishing performance.
Strong, corrosion-resistant, and easy to machine or weld. Widely used in structural, mechanical, and automotive parts.
Medium strength, smooth surface finish, and excellent for anodizing/powder coating. Ideal for architectural profiles like windows and doors.
Commercially pure aluminum with high corrosion resistance and electrical conductivity. Common in chemical equipment, electrical parts, and food processing.
Aluminum Extrusion Finishes
Quality Your Can Trust
At Lewei Precision, quality is built into every step of our aluminum extrusion process. With ISO-certified facilities and more than 70 dedicated extrusion and inspection machines, we ensure every profile meets the highest standards of accuracy and finish.
Dimensional and Tolerance Checks
We measure critical dimensions including cross-section width, height, wall thickness, total length, straightness, flatness, and perpendicularity. Using tools such as calipers, micrometers, gauges, and CMMs, we guarantee compliance with your exact specifications.
Surface Inspection
Each profile is inspected for scratches, dents, cracks, air bubbles, burrs, extrusion lines, and deformation. High-resolution lighting and magnification are used to detect even the finest surface defects.
Material and Performance Testing
On request, we provide detailed test results for strength and hardness, along with RoHS reports and full material certifications to match your project requirements.
Why Choose Lewei Precision Aluminum Extrusion Services
Choose from a wide range of alloys, surface finishes, shapes, and color options. Every extrusion is tailored to your design, industry standards, and performance needs.
We hold critical dimensions to ±0.1 mm and standard dimensions to ±0.15 mm, ensuring consistent fit, functionality, and long-term reliability.
Our streamlined process ensures standard profiles within 7 days, while complex geometries are completed within 10–15 days — without unnecessary tooling delays.
What's the Aluminum Extrusion Process?
Aluminum extrusion is the process of shaping heated aluminum billets by forcing them through a die to create profiles with a specific cross-section.
At Lewei Precision, we follow a proven production workflow:
- Die Preparation – Machining of custom dies for solid, hollow, or semi-hollow profiles.
- Billet Preheating & Extrusion – Billets are heated to 400–500°C and extruded using direct or indirect methods depending on alloy and application.
- Cooling & Stretching – Profiles are cooled, aligned, and cut to precise lengths.
- Aging & Finishing – Heat treatment enhances strength, while finishing adds corrosion protection and visual appeal.
- Inspection & Packaging – Each extrusion undergoes strict dimensional, surface, and material checks before delivery.
This process ensures that every aluminum extrusion produced by Lewei Precision meets high-performance standards for structural integrity, appearance, and durability.
Applications of Aluminum Extrusion
Industries across the globe rely on aluminum extrusions for their strength-to-weight ratio, durability, and design flexibility. At Lewei Precision, our custom extrusions are widely used in:
Machine frames, automation systems, modular workstations
Auto frames, trailers, and train body components
Windows, doors, curtain walls, facades, handrails
solar panel frames, wind turbine parts, offshore structures
Enclosures, LED housings, and efficient heat sinks
Pros and Cons of Aluminum Extrusion
High strength-to-weight ratio reduces overall load
Natural oxide layer protects against rust and degradation
100% recyclable material supports sustainability goals
T-slot compatibility and simple joining methods
Complex profiles possible in a single extrusion process
Lower machining costs compared to solid aluminum blocks
Die manufacturing requires upfront Extrusion lines may need finishing or polishing
Mechanical strength decreases at high heat
Design changes need new tooling
Setup and trimming create scrap material
Press capacity limits maximum profile dimensions
Why Choose Lewei Precision for Aluminum Extrusions?
At Lewei Precision, we offer the highly quality custom extrusion of aluminum in a form of extrusion that suits your demands. Regardless of prototype requirements or high volume production, our aluminum extrusions are available with high levels of accuracy, quick turn-around, and material freedom. We believe in quality and with our experience, we are able to deliver your project with the desired excellence within the least duration.
Precision Engineering
The Lewei Precision extrusion of aluminum is capable of performing to a tight tolerance of +/- 0.1mm and delivers high quality functional parts to any process.
Get prototypes and low-volume parts delivered within 5-7 days, and keep your project on schedule, and meet your deadlines
We are expert at producing bespoke aluminum profiles having complex geometries and cross-sections, suitable in complex designs.
How Are Aluminum Extrusion Made
Aluminum extrusion is a multi-step, precision process that transforms raw billets into high-performance profiles.
FAQs
1. What is aluminum extrusion?
Aluminum extrusion is a production process in which heated aluminum is forced through a custom die into producing parts with a specific cross-sectional shape. It is applied to make long aluminum profile in different industries.
2. What is the duration of the extrusion process of aluminum?
It is estimated that the lead time of extrusion of aluminum is 5-7 days when designing prototypes and lower volume production. The bigger production quantities can be more time consuming, based on part and quantity complications.
3. What are the possible materials to be used in aluminum extrusion?
Our extrusion products come in various aluminum alloys comprising of 6061, 6063 and custom alloys. This is because each alloy chosen will depend on the strength, corrosion resistance, and applicability of alloy to your particular application.
4. Is it possible to make custom shapes on the extrusion of aluminum?
Yes, we can make custom profiles of complicated geometry using aluminum extrusion, solid profiles, hollow profiles, or multi-chambered sections. We have the capacity to handle special design requirements according to the project requirements.
5. What industries are capable of utilizing the services of aluminum extrusion?
Automobiles, aerospace, construction, medical equipment, electronics and others are some of the industries where aluminum is used in extrusion. It is employed in the production of structural frames, heat sink and ornamental trims.
6. What are the tolerances of aluminum extrusions?
We have a standard tolerance of aluminum extrusions of ±0.1mm which is very precise on parts. Specific requirements can be tolerated more strictly.
7. What is the advantage of aluminum extrusion over other processes, such as die casting or CNC machining?
Aluminum extrusion is cost effective in high volume production, has better strength to weight ratio and more design capability than die casting and CNC machining, particularly in complex continuous profiles.
8. How do I obtain a quote of my aluminum extrusion project?
In order to receive a quote, you only have to upload your CAD files on our site. We will assess your design and offer you an elaborate design estimate depending on your specifications and needs.
9. Is it possible to change my design once extrusion process has begun?
The design could be changed at the early stages of the project, which might cost some extra money and time. The best thing is to design last and production first so that you can be in time, and at a reasonable cost.
10. What do you do to guarantee the quality of aluminum extrusions?
The high-level inspection procedures such as CMM ( Coordinate Measuring Machines ) are in use to ascertain dimensional accuracy, and a surface finish test and coating validation are in use to ascertain high quality results throughout production.
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