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How to Choose the Right Steel Section for Your Construction Needs

BHD Kenya November 26, 2025 5 min read
How to Choose the Right Steel Section for Your Construction Needs

How to Choose the Right Steel Section for Your Construction Needs

Steel sections are a critical component in construction projects, providing strength, durability, and flexibility. Selecting the right steel section can save costs, ensure safety, and improve the overall lifespan of your project. In Kenya, contractors, architects, and homeowners often face the challenge of choosing the ideal steel section for residential, commercial, or industrial applications.

This guide explains the types of steel sections, their properties, applications, and how to choose the best option for your construction needs.


What Are Steel Sections?

Steel sections are pre-fabricated shapes of steel designed for structural purposes. They come in various forms, each suited for specific construction requirements. Common steel sections include:

  • MS Flat Bars – Ideal for general fabrication, gates, frames, and supports (see here).

  • MS Angles – L-shaped sections used in bracing, frames, and trusses (see here).

  • MS Tees – T-shaped steel for secondary supports and roofing structures (see here).

  • HR Beams & Channels – H-shaped or channel sections for heavy load-bearing beams (see here).

  • RHS & SHS (Rectangular/Square Hollow Sections) – Hollow sections for lightweight but strong columns and frameworks (see here).

  • CHS (Circular Hollow Sections) – Cylindrical sections for poles, columns, and frames (see here).

  • Zed Sections & Purlins – Commonly used in roofing support structures (see here).

Each section type has unique advantages, which makes choosing the right one essential for structural integrity and cost-effectiveness.


Factors to Consider When Choosing Steel Sections

1. Type of Construction Project

  • Residential: MS Flat Bars, angles, and RHS are typically sufficient for home gates, window frames, and roofing frameworks.

  • Commercial & Industrial: Heavy-duty projects require HR beams, SHS, CHS, and thicker steel sections for columns, beams, and trusses.

  • Roofing: Zed purlins and lightweight hollow sections are ideal for roof structures.


2. Load-Bearing Capacity

Steel sections vary in their load-bearing capacity. Projects that support heavy equipment, multiple floors, or large spans require high-strength sections like HR beams or SHS. Residential or light commercial projects can use MS flat bars or angles, which are easier to handle and install.


3. Steel Grade and Strength

Steel grade determines its tensile strength, flexibility, and resistance to bending. For example:

  • High-grade TMT bars provide superior reinforcement in concrete structures (see TMT Bars).

  • Standard MS Flat Bars and angles are suitable for frames, grills, and non-load-bearing elements.


4. Corrosion Resistance

Kenya’s coastal and humid regions can accelerate steel corrosion. To extend lifespan:

  • Use galvanized or coated steel for outdoor applications.

  • Consider regular painting or maintenance for untreated steel.


5. Fabrication and Ease of Use

Ease of cutting, welding, and assembling varies by section:

  • MS Flat Bars, angles, and tees are simple to work with on-site.

  • Hollow sections (RHS, SHS, CHS) are lighter but may need specialized welding equipment.


6. Budget Considerations

Steel prices depend on section type, size, thickness, and supplier. Hollow sections are often more expensive per meter but reduce overall weight and material cost in long-span structures. MS Flat Bars and angles are generally more cost-effective for small to medium projects.


Common Applications of Steel Sections

  • Residential: Gates, window grills, door frames, roofing supports.

  • Commercial: Columns, beams, partitions, roof trusses.

  • Industrial: Warehouses, storage racks, machinery frameworks.

  • Roofing: Zed purlins, RHS, or CHS for lightweight roof structures.

Steel sections often complement other materials like polycarbonate sheets for roofing or Perspex sheets for partitions.


Tips for Selecting the Right Steel Section

  1. Consult a Structural Engineer: Professional guidance ensures safety and efficiency.

  2. Verify Supplier Specifications: Confirm steel grade, size, and quality. BHD offers certified steel sections suitable for all projects.

  3. Match Section to Load: Heavy-duty HR beams or hollow sections for high loads; MS flat bars for lighter structures.

  4. Consider Corrosion Protection: Use coated or galvanized steel for outdoor projects.

  5. Ensure Availability: Confirm supplier can provide the quantity and size you need. BHD delivers nationwide.


Why Choose BHD for Steel Sections?

BHD (Burhani Hardware Dealers) provides high-quality steel sections and construction materials across Kenya.

  • Quality Assurance: MS Flat Bars, HR beams, SHS, RHS, CHS, angles, and tees.

  • Variety: Multiple sizes and thicknesses for residential, commercial, and industrial projects.

  • Expert Support: Guidance on selecting the right steel section for your project.

  • Nationwide Delivery: Same-day delivery in Nairobi, next-day across Kenya.

  • Complementary Materials: Polycarbonate sheets, WPC panels, Perspex, binding wire, and more.

Visit MS Flat Bars or Contact Us for inquiries and quotes.


Final Thoughts

Choosing the right steel section is crucial for the safety, durability, and success of your construction project. By considering factors such as project type, load requirements, steel grade, corrosion resistance, and budget, you can select a steel section that meets your exact needs.

MS Flat Bars, HR beams, hollow sections, and Zed purlins each have unique applications. Matching the right steel section to your project ensures efficient construction, long-lasting performance, and cost-effectiveness.


Call to Action

Ensure your construction project succeeds by sourcing your steel sections from a trusted supplier. BHD offers a wide range of steel products, expert guidance, and nationwide delivery across Kenya.

  • Explore our MS Flat Bars and other steel sections.

  • Request professional advice on selecting the right steel materials.

  • Contact us today at +254 731 217 462 | +254 704 606 131 or email burhanihardwaredealers yahoo.com.

Visit our Nairobi branch at Industrial Area, Funzi Road, or place your order online for prompt delivery anywhere in Kenya.

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