Explore our high-precision T-slot modular structural frameworks designed for automation, heavy machinery, and customized framing applications.
Guided by the philosophy of "people-oriented, quality value, technological innovation, and win-win cooperation", Chengdu E&I Aluminum Industry Co., Ltd. serves as an industry-leading manufacturer. We specialize in producing complex, high-precision, and demand-intensive aluminum profiles designed to thrive in challenging industrial settings.
By leveraging strategic alignments with prestigious material research institutions like the National Institute of Nonferrous Metals, our R&D team engineers next-generation light alloy compositions. Our profile solutions provide multinational clients with a highly adaptable structural ecosystem. From initial extrusion die designs to automated anodizing, powder coating, and ultra-high-precision multi-axis CNC machining, we offer a comprehensive, vertically integrated production route.
We supply leading Fortune Global 500 automotive manufacturers, advanced aerospace defense contractors, solar energy builders, and major medical device companies. Over decades of expansion, our brand has established itself as the ultimate standard of reliability in precision metal manufacturing.
A structural analysis of the 40x20mm configuration and adjacent slot geometries. Discover how engineering calculations determine optimal loading capacities.
The 40 X 20 Aluminium Extrusion is a highly versatile profile, offering an optimized ratio between vertical bending resistance and lateral compactness. Engineered under structural mechanical guidelines, its asymmetric rectangular geometry allows structural engineers to minimize spatial weight constraints without compromising load-bearing integrity along the major axis.
By placing the 40mm dimension along the primary loading direction, the moment of inertia ($I_x$) is maximized, making it ideal for lightweight conveyor frames, modular display brackets, and laboratory equipment. In contrast, the 20mm profile width allows it to lay flush in compact locations where wider profiles (such as 40x40) would occupy valuable work envelopes.
All Chengdu E&I profiles are extruded from high-purity aluminum alloys (primarily 6063-T5 or 6061-T6), and processed through high-precision die extrusion facilities under strict thermodynamic control to ensure uniform grain structure and eliminate micro-fissures.
| Profile Specification | Alloy Grade | Moment of Inertia Ix (cm⁴) | Moment of Inertia Iy (cm⁴) | Section Modulus Wx (cm³) | Tensile Strength (MPa) |
|---|---|---|---|---|---|
| 40 x 20 T-Slot | 6063-T5 / T6 | 4.82 | 1.38 | 2.41 | ≥ 180 |
| 40 x 40 Heavy Duty (ENI-8-4040E) | 6063-T5 | 9.80 | 9.80 | 4.90 | ≥ 215 |
| 40 x 80 Lightweight (ENI-8-4080C) | 6063-T6 | 68.42 | 18.60 | 17.10 | ≥ 230 |
| 80 x 80 Heavy-Duty (ENI-8-8080W) | 6061-T6 | 124.50 | 124.50 | 31.12 | ≥ 290 |
Driven by excellence, Chengdu E&I balances innovative designs with social responsibility, steering global industrial standards forward.
We strive to rank among China's top three companies in industrial aluminum alloy manufacturing. Our focus centers on product competitiveness, rapid design innovation, and technical strength. By optimizing manufacturing processes, we create sustainable value for our partners, employees, and shareholders.
We view our employees as our greatest asset. E&I is dedicated to creating a safe, inclusive, and high-performance work environment. We offer structured career development opportunities and competitive, performance-linked salaries to foster shared success.
Innovation forms the foundation of our market advantages. By continuously investing in die design simulations, high-efficiency aging treatments, and automated CNC machining center integrations, we provide high-value, customizable structural solutions.
Industrial procurement departments today face complex challenges, including supply chain disruptions, fluctuating metal indices, and varying quality standards. E&I addresses these pain points by offering structured supply chain programs. We provide long-term contract pricing based on the London Metal Exchange (LME) and Shanghai Metal Exchange (SME), protecting clients from sudden price volatility.
We streamline logistical operations through customized packaging schemes, moisture-resistant packaging, and integrated multi-modal transport agreements (FOB, CIF, DDP). By supplying complete structural assemblies—which include profiles, T-nuts, brackets, and fastening bolts—we minimize material handling times for our clients, helping them lower their overall cost of ownership.
Additionally, we help mitigate supply chain risks by maintaining backup inventory reserves for high-volume custom profiles, ensuring just-in-time delivery to international manufacturing plants.
How E&I's technical roadmaps align with international carbon-neutral mandates and automated manufacturing developments.
Automated assembly lines require lightweight profiles to minimize inertial forces in dynamic movements. Our 40x20 and 40x40 profiles provide the perfect foundation for Cartesian gantry systems, pick-and-place robots, and protective guarding enclosures.
High-Speed Dynamic FramesMedical environments demand corrosion resistance and easy-to-clean surfaces. E&I anodized profiles (with coating thickness > 12μm) stand up to harsh sterilization agents, making them ideal for diagnostic workstations and medical cart frames.
Anti-Microbial & Corrosion-ResistantPhotovoltaic installations demand outdoor durability. We offer customized 6005-T6 alloy frames featuring specialized outdoor anodizing treatment, ensuring structure longevity for over 25 years under high UV exposure.
Heavy-Load Wind ResistanceAs global industrial manufacturing transitions toward a circular economy, Chengdu E&I is committed to reducing environmental impact through several green initiatives:
Our structured inspection processes guarantee that all profiles meet strict international tolerances and structural specifications.
We supply complete material documentation with every order to ensure full traceability throughout the production cycle:
To verify that our extrusions meet required load tolerances, every production run undergoes the following physical testing protocols:
Answers to common structural design and material specification questions from engineers and procurement teams.
Explore our specialized heavy-duty profiles, conveyor guide rails, and high-load structural aluminum systems.
