Explore our high-performance structural systems, precision anodized rails, and modular profiles engineered for automated environments.
Guided by our founding philosophy of "people-oriented, quality value, technological innovation, and win-win cooperation," Chengdu E&I Aluminum Industry Co., Ltd. represents the peak of structural metal engineering. We specialize in the R&D and precise manufacturing of complex, tight-tolerance, and highly demanding aluminum alloy extrusions and finished assemblies.
Our strategic alignment with the renowned National Institute of Nonferrous Metals places a world-class team of light alloy material scientists and structural engineers at our disposal. This collaborative research ecosystem allows us to engineer solutions from raw metallurgy to finalized industrial assemblies, catering directly to Fortune 500 automotive manufacturers, heavy-rail system integrators, and global aerospace giants.
An in-depth metallurgical and mechanical analysis of the 35mm structural extrusion series, outlining standard profiles, mechanical limits, and application roadmaps.
In modern structural and modular engineering, the Aluminium Profile 35 series represents one of the most versatile size classifications for medium-duty architectural and mechanical frameworks. Offering a cross-section of 35mm x 35mm or derived configurations (e.g., 35x70mm), it acts as the mathematical sweet spot balancing weight optimization and load-bearing deflection thresholds.
By partnering with the National Institute of Nonferrous Metals, E&I has engineered customized variants of the 35 series. By optimizing the interior webbing design and specifying architectural alloys such as 6063-T6 and 6061-T6, we have enhanced the torsion-resistance properties of the profile class, outperforming competitors in dynamic loading environments.
The table below highlights the mechanical criteria standard to E&I's industrial-grade Aluminium Profile 35 systems:
| Property Parameter | Alloy 6063-T5 | Alloy 6063-T6 |
|---|---|---|
| Tensile Strength (Rm) | ≥ 160 MPa | ≥ 215 MPa |
| 0.2% Proof Stress (Rp0.2) | ≥ 110 MPa | ≥ 170 MPa |
| Elongation (A50mm) | ≥ 8% | ≥ 10% |
| Vickers Hardness | ≥ 65 HV | ≥ 85 HV |
| Deflection Limit (Max Span) | L/300 | L/500 |
How we align state-of-the-art aluminum engineering with international service delivery guidelines and corporate responsibility.
We treat our employees as our greatest wealth, offering highly competitive salaries and specialized technical training to foster innovation.
Delivering high-precision extrusions matching high-tolerance industrial standards, providing long-term reliability and reducing client TCO.
Leveraging R&D to create advanced alloys, high-performance structural systems, and automated anodizing methodologies.
Developing strategic partnerships with manufacturing plants, raw material suppliers, and clients to secure shared value-added goals.
A look into E&I's automated, high-precision extrusion plant and our integrated upstream-to-downstream processing model.
E&I's state-of-the-art facility in Chengdu integrates the entire production cycle. Featuring extrusion presses ranging from 800 to 3600 tons of capacity, we produce profile sizes up to 400mm cross-sections with dimensional tolerances that meet high-precision classifications under Chinese National Standard GB/T 14846 (equivalent to EN 12020).
By controlling alloy homogenization, extrusion temperatures, and quench rates dynamically through PLC feedback systems, we guarantee high grain stability, structural uniformity, and zero micro-cracking across all extrusion runs.
Our facility features fully automated anodizing tanks, sandblasting units, and electrostatic powder coating lines. We deliver industrial-grade protective coatings designed to withstand high-salinity and corrosive industrial environments.
Furthermore, our in-house CNC machining capability provides complete one-stop processing—including precision cutting, 3D multi-axis milling, drilling, tapping, and custom jig assembly—eliminating secondary logistics costs and reducing delivery lead times for global projects.
Our Quality Assurance laboratory utilizes precision testing equipment to guarantee every structural profile conforms to standard specifications. We execute 100% material heat-treatment tracing and run regular microstructural examinations to evaluate mechanical properties under mechanical stress.
In collaboration with the National Institute of Nonferrous Metals, we perform regular mechanical testing (Yield Strength, Hardness, and Tensile Limits) and chemical alloy validation, matching requirements of aerospace and automotive firms worldwide.
Providing specialized structural aluminum frameworks across global industrial sectors.
Our structural profile series—especially the Aluminium Profile 35, 4040, and heavy-duty 8080 profiles—serves as the backbone for custom factory automation. We provide standard modular frameworks for dynamic linear gantries, industrial conveyors, protective machine enclosures, and ergonomic worker benches.
Thanks to the precision alignment of our T-slot geometries, automated guide rails and drive shafts attach with sub-millimeter precision, reducing mechanical wear and vibration.
In cleanroom installations, outgassing and particle accumulation are critical factors. Our anodized profiles offer flat surface profiles with anti-static characteristics, making them ideal for filter fan units (FFU) and clean air structures.
For outdoor installations like utility-scale photovoltaic systems, E&I designs solar mounting structures featuring specialized marine-grade anodizing (exceeding 20μm) to resist environmental exposure without degrading structural performance.
Helping procurement specialists optimize raw material budgets, logistics, and total operational costs.
Standard steel frames require manual welding, cutting, grinding, and rust treatment—labor-intensive processes that increase setup times and cost. E&I's T-slot modular aluminum extrusion systems resolve these issues. By using standard fasteners (M6/M8 structural bolts and T-nuts), assembly is completed using simple hand tools, cutting installation labor costs by up to 60%.
Additionally, modification or expansion of industrial setups requires no welding or structural cutting. Structures can be reconfigured with standard connectors, protecting long-term capital investments.
Shipping aluminum profiles globally requires protective packaging to avoid surface scratching or bending. E&I uses multi-layered protection, wrapping profiles individually in protective film, followed by heavy-duty paper board wraps, and packing them in reinforced wooden crates or custom steel racks.
We manage standard customs clearances, provide complete bill of materials (BOM) documentation, and coordinate logistics with international ports to ensure reliable shipping performance.
Adhering to strict international materials testing guidelines and chemical composition certifications.
To serve key industries like automotive manufacturing and public infrastructure, our extrusions meet national and international structural requirements. We provide complete material certification reports (MTRs) for every production batch.
Our QA protocols are designed to verify that every chemical shipment conforms to global benchmarks, including:
Our integration with the National Institute of Nonferrous Metals ensures we maintain complete material traceability, starting from raw ingot verification down to final shipment:
| Phase | Procedure Name | Quality Assurance Deliverable |
|---|---|---|
| 01 | Ingot Assay Verification | Spectral Analysis & Melt Composition Reports |
| 02 | Extrusion Heat Record | Continuous Temperature Logging & Mechanical Quench Proofs |
| 03 | Physical Performance Audit | Tensile Yield Tests & Hardness Verification Certificates |
| 04 | Surface Finish Inspections | Micron-level coating thickness verification, gloss and adhesion testing |
Find answers to common questions about modular aluminum profiles, manufacturing limits, custom ordering, and technical standards.
Explore our secondary lineup of precision-extruded profiles, featuring heavy-duty sections, protective framing, and specialized corner configurations.
