HOLLOW STRUCTURAL SECTIONS

Typical Production Standards of Hollow Structural Section
Our HSS sections conform to the following globally recognized specifications:

ASTM Standards
ASTM A500: This standard covers cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. It specifies the chemical composition, mechanical properties, dimensions, and tolerances for HSS.
ASTM A501: This standard covers hot-formed welded and seamless carbon steel structural tubing. It is less common than A500 but provides guidelines for similar properties and applications.
ASTM A1085: This standard provides specifications for cold-formed welded carbon steel hollow structural sections for improved performance in seismic and other demanding applications. It has tighter tolerances and enhanced strength and ductility requirements compared to ASTM A500.
EN Standards (European Standards)
EN 10210-1 & EN 10210-2: These standards cover hot finished structural hollow sections of non-alloy and fine grain steels. They specify requirements for hot-formed HSS, including chemical composition, mechanical properties, and dimensional tolerances.
EN 10219-1 & EN 10219-2: These standards cover cold-formed welded structural hollow sections of non-alloy and fine grain steels. They outline specifications for cold-formed HSS, including the manufacturing process, mechanical properties, and dimensions.
JIS Standards (Japanese Standards)
JIS G 3466: This standard covers carbon steel square and rectangular tubes for general structural purposes. It specifies the manufacturing process, chemical composition, mechanical properties, and dimensions for HSS.

HSS Tube Steel Sizes and Shapes
The primary shapes of HSS include square, rectangular, and circular sections.

Square HSS
Width/Height: 1″ x 1″ to 16″ x 16″
Wall Thickness: 0.065″ (1.65 mm) to 0.625″ (15.88 mm)
Rectangular HSS
Width: 2″ to 20″
Height: 1″ to 12″
Wall Thickness: 0.065″ (1.65 mm) to 0.625″ (15.88 mm)
Circular HSS
Outside Diameter (OD): 0.84″ to 24″
Wall Thickness: 0.065″ (1.65 mm) to 0.500″ (12.7 mm)
HSS Steel for Construction
Hollow Structural Sections (HSS) are widely used in construction due to their versatile shapes, high strength-to-weight ratio, and aesthetic appeal.

Buildings: Used in columns, beams, and frames for residential, commercial, and industrial buildings. The high strength and aesthetic appeal of HSS make it a popular choice for modern architectural designs.
Bridges: Employed in trusses, girders, and supports in bridge construction. The high strength-to-weight ratio and durability of HSS are advantageous in bridge engineering.
Infrastructure: Utilized in various infrastructure projects such as sign supports, guardrails, and pipelines. HSS provides the necessary strength and durability for these applications.
Benefits of Hollow Structural Sections (HSS)
Hollow Structural Sections (HSS) offer numerous benefits in construction and structural engineering, making them a popular choice for various applications.

1. High Strength-to-Weight Ratio
HSS provides excellent strength while being relatively lightweight compared to solid sections. This efficiency reduces the overall weight of structures, which can lower construction costs and foundation requirements.

2. Structural Efficiency
The closed shape of HSS provides uniform strength in all directions, making them highly efficient for resisting bending, torsion, and axial loads. This uniformity is particularly beneficial in columns and beams subjected to multi-directional forces.

3. Aesthetic Appeal
HSS has a clean, smooth appearance that is often preferred in architectural designs. They can be easily incorporated into exposed structures, providing an aesthetically pleasing and modern look.

4. Versatility in Design
HSS comes in various shapes (square, rectangular, circular, elliptical) and sizes, allowing for a wide range of design possibilities. This versatility helps architects and engineers achieve both functional and creative design objectives.

5. Ease of Fabrication
HSS can be easily cut, welded, and connected, facilitating efficient fabrication and assembly. This ease of handling can lead to faster construction times and reduced labor costs.

6. Durability and Longevity
The enclosed shape of HSS provides better resistance to environmental factors such as corrosion and weathering compared to open sections. This durability extends the lifespan of structures and reduces maintenance needs.

7. Improved Buckling Resistance
The closed section of HSS enhances its resistance to buckling under compression loads, making them ideal for use as columns and other load-bearing members in structures.

8. Reduced Surface Area
HSS has a smaller surface area compared to equivalent open sections, which can reduce the amount of protective coating needed for corrosion resistance. This reduction can lead to cost savings in materials and maintenance.