Rectangular Hollow Section stocking

RHS

Rectangular Hollow Sections (RHS)

Rectangular Hollow Sections (RHS) are versatile steel profiles used in structural, construction, and mechanical applications, designed for ease of welding and joining.

RHS are manufactured using Electric Resistance Welding (ERW) or similar processes, forming steel strips into rectangular shapes with minimal edge preparation required for welding and joining. These sections offer high strength-to-weight ratios and are ideal for applications in building frameworks, bridges, machinery, and structural supports, providing durability and stability.

Tehcnical Information

Rigorous testing ensures compliance with industry standards, and options for surface treatments like galvanizing or coating enhance corrosion resistance, making RHS suitable for demanding construction and mechanical environments.

• Dimensions: EN10219-2
• Specification: EN10219-1
• Size Range: 40mm x 20mm to 400mm x 300mm

Rectangular Hollow Sections provide robust, cost-effective solutions for diverse structural applications, ensuring reliability and ease of use.

Rectangular Hollow Section (RHS) tubes are cold-formed, welded steel tubes with a rectangular cross-section, designed for structural and mechanical applications. Compliant with standards such as EN 10219, ASTM A500, and JIS G3466, these tubes offer high strength-to-weight ratios, with tensile strengths ranging from 355 to 630 MPa depending on the grade, making them ideal for structural frameworks, construction columns, and fencing.

Manufactured through electric resistance welding (ERW) or seamless processes, Rectangular Hollow Sections are available in sizes from 40x20 mm to 500x300 mm, with wall thicknesses from 1.5 to 16 mm. Surface treatments like galvanizing, powder coating, or anti-rust oil enhance corrosion-resistant RHS for outdoor and harsh environments. These sections are produced in standard lengths of 6–12 meters, with customization available for specific project requirements.

Rigorous testing, including tensile, bending, and flattening tests, ensures compliance with international standards. The rectangular geometry provides excellent load-bearing capacity in specific directions, making Rectangular Hollow Sections suitable for visible structural elements in buildings, bridges, and furniture manufacturing. Their versatility supports welding, bolting, and forming, ensuring compatibility with complex designs.

Compared to square hollow sections (SHS) or I-beams, Rectangular Hollow Sections offer directional strength and aesthetic appeal, making them a cost-effective choice for structural applications. Their lightweight design reduces material costs while maintaining durability, ideal for automotive structures and agricultural equipment.

Rectangular Hollow Sections address challenges like structural stability, corrosion, and aesthetic requirements, providing reliable, high-performance solutions for construction and industrial applications.

It is commonly used in construction and structural applications due to its strength and versatility.

Benefits of Rectangular Hollow Section

Rectangular and square HSS have about two-thirds the surface area of an open section of comparable capacity, resulting in cost savings. There is less surface to prepare, fewer painting materials are required, cementitious fireproofing can be reduced, and minimal labour is needed.

Sizes of Rectangular Hollow Section

Rectangular Hollow Section tubes are commonly used as structural sections. They provide greater strength and solderability. Typical sizes range from 50 mm x 25 mm up to 450 mm x 250 mm, with wall thicknesses between 2 mm and 20 mm in larger sections.

Their uniformity makes them predictable to use and visually appealing, with a high weight-to-strength ratio.

Our Products

We manufacture and export Rectangular Hollow Sections, Rectangular Hollow Steel Sections, and Rectangular Hollow Section Tubes as per customer requirements, with anti-rust oil coating inside and outside to ensure safe delivery.

Materials & Availability

Rectangular Tubes are commonly available in Aluminium, Stainless Steel, Black Steel, and Bright Steel. They can be purchased at Metal Supermarkets locations and cut to exact specifications.

What is RHS?

RHS stands for Rectangular Hollow Section. Although often used interchangeably with square hollow section, the correct term for square tube is SHS (Square Hollow Section).

Difference Between Square Tube and Rectangular Tube

Square tubes and rectangular tubes are common hollow structural sections used in construction, manufacturing, and engineering. The main difference is in their cross-sectional shape:

1. Cross-section:
   • Square tube: square cross-section
   • Rectangular tube: rectangular cross-section
2. Applications:
   • Square tube uses: Construction, machinery manufacturing, steel projects, shipbuilding, solar power brackets, steel structure engineering, power plants, agricultural and chemical machinery, glass curtain walls, automotive chassis, airports, boiler construction, highway railings, building construction, pressure vessels, oil storage tanks, bridges, power station equipment.
   • Rectangular tube uses: Transporting fluids (petroleum, natural gas, water, steam), especially when bending and torsional strength with low weight are needed. Also used in manufacturing mechanical parts, engineering structures, and production of conventional weapons like barrels and shells.
3. Coverage: A square tube is a type of rectangular tube and falls under the rectangular tube category.

Additional Information

Rectangular tubes are usually produced by cold rolling or hot rolling. Hot-rolled tubes are made by passing hot-rolled strips through the process. Cold-drawn or cold-rolled precision tubes are used in mechanical structures and hydraulic equipment, offering high dimensional accuracy and smooth surfaces.

Many defects in square tubes occur during perforation, making this step critical. High-alloy materials have low perforation performance, so selecting deformation parameters carefully is important to ensure quality.

What Does RHS Mean in Steel?

RHS (Rectangular Hollow Section) tubing is widely used in construction and fabrication, popular for furniture, frames, and load-bearing applications.

Notes

• A: Width
• T: Wall thickness
• SHS: Square Hollow Section
• RHS: Rectangular Hollow Section
• Surface finish: Hot-dipped galvanized, electro-galvanized, black
• Mill Test Certificate: EN 10204/3.1B
• Third-party inspection: SGS, BV, Lloyds, etc.
• Pre-galvanized square/rectangular hollow sections with OD 19mm–70mm and thickness 1mm–2.3mm are also available.

Chemical Composition

Steel Grades: Q195, Q215, Q235, Q345, S235JR, S275JR, SS400

Rectangular Hollow Section Standard Specifications