Within modern manufacturing, the 40 series aluminum profile represents the benchmark for modular structural frames. Characterized by a 40mm cross-sectional grid dimension and typically utilizing an 8mm slot width, these profiles offer a balance of strength, modular flexibility, and light weight. Engineers rely on the 40 series for constructs ranging from high-load-bearing CNC enclosures and robotic work cells to cleanroom frames and safety guardrails.
At Chengdu E&I Aluminum Industry Co., Ltd., we understand that structural integrity is paramount. In partnerships with the National Institute of Nonferrous Metals, our light alloy technical teams design our profiles to meet strict dimensional tolerances and metallurgical targets. Using premium 6000-series alloys (primarily 6063-T5 or 6061-T6), we extrude profiles with optimized cross-sectional wall thicknesses. This design produces high yield strength and torsional resistance, while maintaining compatibility with standard M8 fasteners.
SEO Insight & Intent Alignment: Modern industrial sourcing managers seek more than simple metal dimensions. They require profiles with certified mechanical behavior, wear-resistant coatings, and reliable structural joint options to guarantee safety and efficiency on assembly lines.
Our comprehensive services go beyond basic extrusion. We deliver customized solutions including precision cutting, CNC drilling, tapping, sub-assembly, and surface optimization. This provides international clients with a single point of responsibility for their structural installations.
Chengdu E&I Aluminum Industry Co., Ltd. operates under the business philosophy of "people-oriented, quality value, technological innovation, and win-win cooperation." We dedicate ourselves to the research, development, and manufacturing of high-difficulty, high-precision, and high-specification aluminum alloy products. Supported by Chinese light alloy research networks, our engineering team supplies integrated solutions for aluminum profiles, structural components, castings, and forgings.
We operate multi-ton extrusion presses equipped with automated cooling beds, enabling consistent cross-sectional geometries and microstructures for all 40 series variants.
Our automated anodizing and powder-coating lines produce protective oxide layers that guard against chemical exposure, physical abrasion, and ambient humidity.
We provide full fabrication services, from raw extrusion to custom cutting, high-tolerance CNC machining, custom bracket design, and on-site ready kits.
International industrial buyers balance cost, delivery times, and engineering tolerances. Sourcing from Chengdu E&I provides access to China's integrated aluminum manufacturing ecosystem, from local smelting and billet casting to final extrusion and anodizing.
By locating our production steps within a single integrated hub, we streamline production cycles and reduce internal shipping delays.
Our logistical connections support efficient door-to-door delivery for international projects and industrial installations.
E&I produces a range of 40 series variants designed for different load-bearing conditions, weights, and accessory configurations. Our profiles are engineered to meet national high-precision standards (GB/T 5237-2008).
| Profile Model | Dimensions (mm) | Slot Width (mm) | Weight (kg/m) | Inertia (Ix / Iy) | Primary Industrial Use Cases |
|---|---|---|---|---|---|
| ENI-8-4040B | 40 x 40 | 8.0 | ~1.95 | 9.5 cm⁴ / 9.5 cm⁴ | Heavy-duty machinery bases, dynamic linear rail supports. |
| E&I-8-4040C | 40 x 40 | 8.0 | ~1.65 | 7.8 cm⁴ / 7.8 cm⁴ | Industrial safety guardrails, protective screen frames. |
| E&I-8-4040D | 40 x 40 | 8.0 | ~1.80 | 8.6 cm⁴ / 8.6 cm⁴ | Automated conveyor frames, medium-load workstation skeletons. |
| E&I-8-4040T | 40 x 40 | 8.0 | ~1.38 | 5.8 cm⁴ / 5.8 cm⁴ | Lightweight assembly partitions, display cabinets, factory fencing. |
| E&I-8-4060 | 40 x 60 | 8.0 | ~2.20 | 18.4 cm⁴ / 9.1 cm⁴ | Multi-axis gantry frames, cantilever beams, automation lines. |
| E&I-8-4080 | 40 x 80 | 8.0 | ~3.10 | 48.2 cm⁴ / 12.8 cm⁴ | Heavy automation equipment beds, multi-tier assembly workbenches. |
Industrial structural engineering demands strict adherence to international safety and quality standards. Our 40 series profiles are designed and processed to align with global regulatory frameworks, including European RoHS directives, ISO 9001 quality management, and ASTM structural criteria. By maintaining an in-house laboratory, we verify chemical composition and structural performance for every batch.
Our operations comply with ISO 9001:2015 standards, ensuring that raw material selection, heat treatment, and dimensional tolerances are fully traceable.
We coordinate with engineering networks to offer local CAD integration support, ensuring our profile specifications integrate smoothly into your assembly designs.
Industrial trends demand lower carbon footprints. Our aluminum alloys are highly recyclable, and our energy-efficient extrusion lines lower the environmental impact per kilogram of profile.
Modern production shifts toward modularity. Our profiles support fast modification, allowing factories to reconfigure their assembly lines for high-mix, low-volume runs.
The versatility of E&I's 40 series aluminum profiles is demonstrated across various high-value industries. Here are the primary applications where our profiles provide structural support:
Used to construct material racks, workbench systems, conveyor frames, and protective guardrails. Integrated T-slots facilitate the mounting of sensors, pneumatic cylinders, and electrical runs.
Our profiles feature a smooth anodized surface (12-15μm) that minimizes dust collection, resists chemical cleaning agents, and makes them suitable for semiconductor and pharmaceutical cleanrooms.
Lightweight profiles like the 4040T and 4040LD are combined with wire mesh or polycarbonate sheets to form protective screens around CNC machining centers and high-speed robotic cells.
At Chengdu E&I Aluminum Industry Co., Ltd., our business is anchored on four principles:
We treat our employees as our most valuable asset. By supporting their career development and offering competitive compensation, we grow together.
We focus on quality, ensuring our products deliver high value and reliable performance for our clients.
We continuously invest in metallurgy and extrusion technology. In partnerships with light alloy technology teams, we develop custom solutions that help our customers optimize their structural designs.
We cooperate closely with customers, suppliers, and partners to build reliable, long-term strategic relationships that support shared growth.
Our Vision:
We strive to be a leading player in the aluminum alloy industry, recognized for product competitiveness, innovation, and technical expertise.
We work with procurement managers and design engineers to deliver structural assemblies that match their design specifications.
Find technical answers regarding 40 series specifications, surface treatments, customization, and lead times.
