Why choose Structural Steel Sections?
What are structural steel sections?
Structural steel sections are engineered steel profiles designed to provide strength, stability and load-bearing support in construction and fabrication projects. Manufactured to strict tolerances and available in a variety of profiles, structural steel is widely used in commercial buildings, residential developments, infrastructure, agricultural construction and general engineering.
At F.H.Brundle, we stock a comprehensive range of structural steel sections including universal columns, universal beams (RSJs), rolled steel channels, reinforcement bar (rebar) and rolled steel angles. Available in popular grades including S275 and S355, our steel sections deliver reliable performance across demanding structural applications.
Our large UK stockholding allows for fast nationwide delivery, helping fabricators, builders and contractors keep projects moving efficiently.
What are the choices when it comes to structural steel sections?
Structural steel sections are available in a variety of profiles designed for different construction and engineering applications. Universal columns (UCs) are primarily used for vertical load-bearing structures such as steel-framed buildings, mezzanine floors and extensions due to their excellent compressive strength. Universal beams (UBs), also known as RSJs or I-beams, are designed to support horizontal loads and are commonly used for structural framing, floor supports and lintels. Rolled steel channels, commonly known as C-sections, provide lightweight yet durable support for frameworks, machinery and industrial fabrication, while rolled steel angles offer versatile strength for bracing, support frames and architectural steelwork. Reinforcement bar (rebar) is used within concrete structures to improve tensile strength and reduce cracking, making it essential for foundations, slabs and infrastructure projects.
| Feature Category | Key Benefit | Detail |
|---|---|---|
| Strength & Performance | High Load Capacity | Structural steel sections provide exceptional strength-to-weight performance for demanding applications. |
| Versatility | Wide Range of Applications | Suitable for construction, engineering, fabrication, infrastructure and agricultural projects. |
| Durability | Long Service Life | Manufactured from high-quality steel grades for long-term structural reliability. |
| Fabrication | Easy to Cut & Weld | Steel sections can easily be cut, drilled, welded and fabricated to specification. |
| Efficiency | Cost Effective Construction | cost-effective. |
| Sustainability | Recyclable Material | Structural steel is fully recyclable and supports sustainable construction practices. |
Where can structural steel sections be used?
Universal beams and columns are widely used within steel-framed buildings, extensions and commercial developments, while rolled steel channels and angles are commonly utilised within fabrication and support structures.
Reinforcement bar remains essential for strengthening concrete structures across residential, commercial and infrastructure projects.
Typical sectors include:
- Commercial construction
- Residential developments
- Industrial buildings
- Agricultural projects
- Civil engineering
- Infrastructure projects
- Fabrication and engineering
- Manufacturing facilities
How to buy
Now you have more insight into the benefits and applications of structural steel sections, the next step is choosing the correct products for your project.
(1) Select your steel section – Choose the appropriate section profile for your application, including universal columns, universal beams, steel channels, rebar or rolled steel angles.
(2) Determine the size and grade – Select the required dimensions, weights and steel grade to meet structural and fabrication requirements.
(3) Calculate quantities – Measure and plan your project carefully to ensure accurate ordering and minimise waste.
(4) Delivery and fabrication – F.H.Brundle offers fast nationwide delivery and can support projects with stocked steel sections ready for fabrication and installation.
FAQs
Structural steel can be used externally when properly protected with galvanising, paint systems or specialist coatings to improve corrosion resistance and longevity.
Yes, structural steel sections can be cut, drilled and fabricated to suit project requirements. Steel sections are widely used because they are easy to modify and install.
Universal beams are designed primarily to support horizontal loads, while universal columns are intended for vertical load-bearing applications. Universal columns typically feature a wider flange profile for increased compressive strength.
Red oxide is mainly an anti-corrosion primer. It:
- slows rust formation,
- protects steel during transport/storage,
- provides a base coat for later painting.
It is not usually considered a final decorative or long-term protective finish unless specified.
Strength difference?
Normally none.
The beam strength depends on:
- steel grade (for example S275 or S355),
- beam size,
- section properties,
—not whether it has red oxide primer.
When to choose each
- Choose bare mild steel UB if:
- you will galvanize it,
- fabricate/weld extensively,
- or apply your own coating system.
- Choose red oxide painted UB if:
- you want quick rust protection,
- the beam may sit outdoors temporarily,
- or you want it pre-primed for painting.
Common steel grades for UBs in the UK include S275 structural steel and S355 structural steel.
