Introduction
Square Steel Tube-also known as Hollow Structural Section (HSS)-is a versatile, high‑strength structural element manufactured from cold‑formed or welded carbon steel plate. Featuring a uniform wall thickness and precise dimensional tolerances, square tubes deliver exceptional load‑bearing capacity, torsional rigidity, and aesthetic appeal. Widely used in construction, infrastructure, furniture, and industrial applications, these tubes offer ease of fabrication, excellent weldability, and long‑term durability, making them a cornerstone of modern steel design.
Key Specifications
| Specification | Details |
|---|---|
| Base Material | Cold‑formed carbon steel (S235, S275, S355) |
| Standard Grades | ASTM A500 / EN 10210 / EN 10219 |
| Outer Dimensions (OD) | 20 × 20 mm to 300 × 300 mm |
| Wall Thickness | 1.0 – 12.5 mm |
| Length | 6 – 12 meters (custom lengths available) |
| Tensile Strength | 315–550 MPa |
| Yield Strength | ≥ 235 MPa |
| Surface Finish | Black mill finish, hot‑dip galvanized, or pre‑painted |
Custom sizes, thicknesses, and finishes available upon request.
Features & Advantages
High Structural Performance: Uniform wall thickness and square profile provide excellent compressive and bending strength.
Precision & Consistency: Manufactured to tight dimensional tolerances for seamless connections and assemblies.
Outstanding Weldability: Clean edges and consistent steel chemistry ensure reliable welds and fabrications.
Corrosion Protection Options: Choice of black mill finish, galvanizing, or coating for enhanced longevity in harsh environments.
Aesthetic Appeal: Clean lines and smooth surfaces make square tubes ideal for exposed architectural elements and modern furniture design.
Applications
Construction & Infrastructure: Structural frames, columns, trusses, and scaffolding.
Architectural & Interior Design: Handrails, balustrades, furniture frames, and decorative façades.
Automotive & Transportation: Chassis components, trailers, and cargo racks.
Industrial Equipment: Conveyor supports, machine guards, and storage racks.
Agricultural & Fencing: Gate posts, fence uprights, and livestock enclosures.
Packaging & Delivery
Packaging: Bundled with steel strapping and edge protectors; coated with rust‑inhibiting oil; packaged on treated wooden skids.
Delivery Lead Time: Standard production and shipment within 15–25 days after order confirmation; expedited options available for urgent projects.
Why Choose Our Square Tubes?
With over 15 years of expertise in structural steel fabrication and an ISO 9001‑certified facility, we combine advanced cold‑forming lines, laser‑guided cutting, and rigorous quality inspections. We offer:
Custom Fabrication: Tailored cut‑to‑length, mitering, punching, and pre‑assembly services.
Stringent Quality Control: 100% ultrasonic wall‑thickness testing, dimensional checks, and weld integrity assessments.
Technical Support: Dedicated engineering team ready to assist with design optimization, load calculations, and finish selection.
Contact Us
For premium Square Steel Tubes engineered to your exact specifications, please contact our sales office. We're committed to delivering reliable, high‑performance structural solutions and responsive support for your next project.
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