Square Hollow Section Supplier

All our SHS products undergo strict mechanical performance testing to ensure stable and consistent structural performance. The core physical and mechanical parameters compliant with international standards are as follows:

• Tensile Strength: 370–510MPa (S235JR); 470–630MPa (S355J0), featuring strong tensile resistance and no easy deformation under axial tension

• Yield Strength: ≥235MPa (low carbon grade); ≥355MPa (high strength grade), stable yield performance to ensure structural safety under long-term load

• Elongation: ≥21%, excellent ductility and toughness, effectively resisting impact load and seismic vibration

• Torsional Stiffness: Symmetrical square cross-section provides uniform multi-directional torsional resistance, far superior to rectangular hollow section (RHS) and open-section steel, effectively avoiding structural torsion and distortion

• Bending Performance: High moment of inertia and section modulus, uniform stress distribution during bending, no local stress concentration

• Dimensional Tolerance: Strict compliance with standard tolerances for side length, wall thickness, straightness, and flat end, ensuring precise assembly and seamless welding

• Surface Performance: Smooth and uniform surface, no cracks, pits, or burrs; customizable hot-dip galvanizing, powder coating, and anti-rust treatment for enhanced corrosion resistance

• Superior Structural Stability The fully symmetrical square closed structure realizes uniform force bearing in horizontal, vertical, and multi-torsional directions. It effectively disperses dynamic and static loads, reduces structural deformation, and is more stable than angle steel, channel steel, and other open profiles, making it the preferred material for building columns, support frames, and load-bearing structures.

• High Strength-to-Weight Ratio The closed hollow section optimizes cross-sectional mechanical efficiency. Under the same weight, it provides higher rigidity and load-bearing capacity than solid steel; under the same load standard, it reduces overall steel consumption, greatly lowering project transportation, foundation, and construction costs.

• Excellent Processability & Installability The flat four-sided structure simplifies cutting, welding, drilling, and assembly processes. It features high installation efficiency, low construction difficulty, and tight stacking space, saving on-site construction cycle and labor costs, suitable for standardized and modular engineering construction.

• Outstanding Aesthetic & Versatility Neat square appearance with smooth surface meets modern architectural aesthetic requirements, applicable for both hidden structural support and exposed decorative frameworks. It covers lightweight civil construction and heavy industrial equipment support scenarios with ultra-wide application adaptability.

• Customizable Durability With optional hot-dip galvanizing, anti-rust paint, and polymer coating treatments, the product achieves excellent oxidation and corrosion resistance, adapting to harsh environments such as coastal high humidity, high salt spray, and outdoor open-air exposure, extending service life significantly.

• Relying on standard compliance and stable performance, our SHS products are exported to Europe, Southeast Asia, the Middle East, Africa, and America, widely used in: building steel structures, factory workshop frames, bridge auxiliary supports, guardrail engineering, mechanical equipment bases, container frameworks, architectural decoration engineering, and municipal infrastructure projects.