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Aluminum square tube (aluminum box section) is a hollow square cross-section profile obtained by extrusion or seamless processing. It has the characteristics of light weight, high strength, corrosion resistance, easy processing and good appearance. It is used in structural supports, frames, guardrails, furniture, building decoration, transportation equipment and industrial components.
| Alloy | 6061 / 6063 / 6005 / 5052 / 6082 / 2024 |
| Temper | T4 / T5 / T6 / H14 / H32 |
| Equivalent | ASTM B221 / EN 755-9 / GB/T 6892 / JIS H4100 |
| Shape | Square / Rectangular hollow section |
| Surface Finish | Mill finish, Anodized (clear or colored), Powder coated, Polished, Brushed, Electrophoresis, PVDF, Wood-grain finish |
| Process | Extruded or Drawn |
| Wall Thickness | 0.5 mm – 10 mm (customizable) |
| OD | 10×10 mm – 300×300 mm (or ½” – 12″) |
| Standard | ASTM B221 / EN / JIS / GB / DIN |
| Application | Structural frames, architectural railings, furniture, display systems, vehicle and ship components, construction decoration, machinery parts |
| Alloy | Temper | OD (mm) | Wall Thickness (mm) | Surface Finish | Length | Standard |
|---|---|---|---|---|---|---|
| 6063 | T5 | 20×20 | 1.0 | Mill Finish | 6 m | ASTM B221 |
| 6063 | T6 | 25×25 | 1.5 | Anodized | 6 m | ASTM B221 |
| 6061 | T6 | 30×30 | 2.0 | Mill Finish | 6 m | ASTM B221 |
| 6061 | T6 | 40×40 | 3.0 | Powder Coated | 6 m | ASTM B221 |
| 6005 | T5 | 50×50 | 2.5 | Mill Finish | 6 m | EN 755-9 |
| 6082 | T6 | 60×60 | 3.0 | Clear Anodized | 6 m | ASTM B221 |
| 5052 | H32 | 80×80 | 2.0 | Mill Finish | 6 m | GB/T 6892 |
| 6061 | T6 | 100×100 | 4.0 | Brushed | 6 m | ASTM B221 |
| 6063 | T5 | 120×120 | 3.0 | PVDF Coated | 6 m | ASTM B221 |
| 6082 | T6 | 150×150 | 5.0 | Mill Finish | 6 m | EN 755-9 |
Aluminum square tubes are widely used in applications that require a combination of lightweight, strength, corrosion resistance, and aesthetic appeal. Typical uses include:
Structural frames for buildings, machinery, and industrial equipment.
Architectural railings, fences, and balconies for both functional support and decorative purposes.
Furniture and display systems, such as tables, shelves, exhibition stands, and shop fittings.
Transportation components, including vehicle frames, trailers, and marine structures.
Construction and decorative elements, like curtain walls, façades, and interior trim.
Mechanical parts and enclosures where precision, rigidity, and corrosion resistance are important.
Aluminum square tubes are selected for these applications because they provide high strength-to-weight ratio, easy fabrication (cutting, welding, drilling), and flexible surface finishing options such as anodizing, powder coating, or polishing.
Lightweight – Aluminum is significantly lighter than steel, making handling, transportation, and installation easier.
High Strength-to-Weight Ratio – Especially in alloys like 6061-T6 and 6082-T6, providing strong structural support without excessive weight.
Corrosion Resistance – Naturally forms a protective oxide layer; anodizing or powder coating further enhances durability, ideal for outdoor or marine applications.
Excellent Formability – Can be easily cut, drilled, bent, welded, or machined to fit different design requirements.
Versatile Surface Finishes – Options include mill finish, anodized, powder coated, brushed, polished, or PVDF/wood-grain finishes for functional and aesthetic purposes.
Precision and Consistency – Extruded or drawn processes ensure uniform wall thickness and dimensional accuracy.
Durability and Long Service Life – Resistant to wear, weathering, and chemical exposure in industrial and architectural settings.
Customizable Sizes – Available in a wide range of outer dimensions and wall thicknesses to suit different structural and decorative needs.
These characteristics make aluminum square tubes ideal for structural frameworks, architectural features, furniture, transportation, and industrial applications.
