20 Series Aluminum Extrusion Profile Manufacturers

What Is a 20 Series Aluminum Extrusion Profile?

The 20 series aluminum extrusion profile is the industry standard for compact, lightweight industrial frameworks. With a nominal cross-section based on 20 mm increments (e.g., 20×20 mm, 20×40 mm), these profiles provide sufficient structural rigidity for small-scale machine guards, 3D printer frames, automated testing units, and light-duty conveyors. As a 20 Series Aluminum Extrusion Profile manufacturer, Shanghai Huishuo Aluminum Industry Technology Co., Ltd. offers a range of profiles with 6 mm or 4 mm T-slots, anodized finishes, and compatibility with standard fasteners and accessories. the technical information helps procurement managers and engineers select the right profile variant, understand specification trade-offs, and prepare a complete RFQ.

Key Specifications and Variants

The 20 series includes several cross-section designs, each optimized for different load and assembly requirements. Below is a comparison of the most common profiles available from the factory.

Application Fit and Selection Logic

Choosing the right 20 series profile depends on load requirements, assembly method, and environmental conditions.

• 2020 (20×20 mm, 6 mm slot): Best for lightweight, space-constrained frames such as 3D printer axes, small jigs, and sensor mounts. The 6 mm T-slot accepts standard M6 or 6 mm nuts and bolts.
• 2020R (rounded corners): Use when aesthetics or safety require no sharp edges. Common in operator-accessible enclosures.
• 2020N1 / 2020N2 (closed slots): Specify when dust or debris must be kept out of the slot. N1 has one closed side; N2 has two adjacent closed sides. Ideal for clean-room equipment.
• 2020 Square Slot (4 mm): For ultra-light structures where weight is critical and fastener size can be smaller. Not compatible with standard 6 mm accessories.
• 2040 (20×40 mm): Provides higher bending stiffness in one axis. Suitable for workbench legs, light conveyor supports.
• Square Slot 2040 (8 mm): Allows larger bolts for stronger joints. Use when frame rigidity is a priority.
• 2060 (20×60 mm): Multi-slot design enables multiple attachment points along the wide face. Good for modular fixtures.
• 2080 (20×80 mm): Highest load capacity in the 20 series. Use for machine bases, heavy guards, or long-span beams.
• Square Slot 2080 (8 mm): Reinforced cross-section with 8 mm slots for maximum joint strength in heavy-load applications.

Material and Surface Treatment

All 20 series profiles from this 20 Series Aluminum Extrusion Profile supplier are extruded from 6063-T5 or 6061-T6 aluminum alloy, depending on the required strength and formability. Standard surface treatment is silver or black anodizing (AA10-AA15), providing corrosion resistance and a consistent finish. For specialized environments, powder coating or electrophoretic coating can be arranged. Confirm the alloy and temper in your RFQ, as 6061-T6 offers higher tensile strength but is less extrudable for complex shapes.

Accessories and Assembly

20 series profiles are designed to work with a full range of Aluminium Profile Accessories, including T-nuts, corner brackets, angle joints, and end caps. The 6 mm slot is compatible with standard M6 slide-in nuts and spring-loaded fasteners. For 4 mm square slot profiles, use dedicated 4 mm hardware. When ordering, specify whether you need pre-cut lengths, drilled and tapped holes, or complete frame kits. The manufacturer offers CNC Aluminum Processing for precision machining of profiles to your exact dimensions.

Quality Assurance and Acceptance Testing

Inspect incoming profiles for dimensional accuracy (cross-section tolerance ±0.2 mm typical), straightness (≤0.5 mm per meter), and surface finish uniformity. The factory holds a Quality Management System Certification and uses testing equipment such as image measuring instruments and tensile testers. Request a material test certificate (MTC) per EN 10204 or equivalent for traceability. For large orders, consider a pre-shipment inspection (PSI) to verify slot width, surface defects, and anodizing thickness (≥10 μm recommended).

Buyer RFQ Checklist

Use the following checklist when requesting a quotation for 20 series aluminum extrusion profiles:

• Profile model and cross-section (e.g., 2020, 2040, 2080)
• Slot type and width (6 mm T-slot, 4 mm square slot, or 8 mm square slot)
• Alloy and temper (e.g., 6063-T5, 6061-T6)
• Surface finish (silver anodized, black anodized, powder coated)
• Length per piece and total quantity (standard stock lengths: 6 m, custom cut lengths)
• Machining requirements (cutting, drilling, tapping, countersinking)
• Packaging (bundled, wrapped, or crated for export)
• Delivery lead time and incoterms (FOB Shanghai, CIF, etc.)
• Certification requirements (MTC, RoHS, REACH)
• Sample availability and cost

Total Cost of Ownership Considerations

When evaluating suppliers, consider not just unit price but also:

• Lead time: Standard profiles are often stocked; custom lengths may add 1-2 weeks.
• Minimum order quantity (MOQ): Typically 100-500 kg for standard profiles; lower for samples.
• Tooling costs: If you need a non-standard cross-section, custom mold making is available.
• Warranty: Confirm coverage against extrusion defects and anodizing failure.
• After-sales support: Does the supplier provide assembly drawings or technical assistance?

Frequently Asked Questions