Custom Aluminum Extrusion Services
Our custom aluminum extrusion services offer tailored solutions to create precise, durable aluminum profiles for a wide range of applications.
- Efficient mold designs for complex, high-quality parts
- Quick-turn prototypes and production parts in days
- Certified to ISO 9001:2015, ISO 13485, ISO 14001:2015, and IATF 16949:2016 standards
Lewei Precision Aluminum Extrusion Services
At Lewei Präzision, 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.
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 Präzision, 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 Präzision, 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
How Are Aluminum Extrusion Made
Aluminum extrusion is a multi-step, precision process that transforms raw billets into high-performance profiles.
FAQs
What’s the typical tolerance range for custom aluminum extrusions?
Tighter tolerances require additional tooling and inspections, which can raise production costs. At Lewei Präzision, we recommend selecting tolerances that align with your project’s actual needs. For most applications, standard tolerances keep costs efficient, while critical dimensions can be controlled within ±0.1 mm and general dimensions within ±0.15 mm. Our engineers help you find the right balance between accuracy and cost-effectiveness.
Are there non-welding frame or gantry options besides aluminum extrusions?
Yes. Steel tubing with mechanical connections can be used as an alternative. Tubes can be joined using brackets, braces, clamps, or fasteners without welding. While steel provides higher strength, it is heavier and often requires more complex assembly. Aluminum extrusions remain easier to assemble and lighter for modular builds.
What factors determine the wall thickness of custom aluminum extrusions
Wall thickness depends on several factors:
- Alloy choice – Softer alloys may require thicker walls, while stronger alloys support thinner sections.
- Profile design – Complex shapes or deep channels may need added thickness for stability.
- Press capacity – The tonnage and size of the press influence feasible thickness.
- Surface finishing – Some finishes like anodizing may require minimum thickness to prevent distortion.
Tolerance requirements – Stricter tolerances may lead to slightly thicker sections.
What wall thickness is generally recommended?
A typical range is 1.0 mm to 2.5 mm. Structural parts often use 2.0 mm or more for added strength, while lightweight or decorative parts can be produced with thinner walls. Our team helps you select the most efficient wall thickness for your application.
Do you support prototyping for aluminum extrusion projects?
Yes. We offer prototype and small-batch runs so you can test fit, dimensions, tolerances, and finishes before committing to mass production. Prototyping reduces risk and allows design adjustments early in the process.
