
North West Metal Sections
Modular Steel Frame System
Modular steel framing systems are becoming a preferred choice across the construction industry due to their strength, efficiency and adaptability. These systems use prefabricated steel components manufactured off-site and assembled quickly on location. The result is a reliable structural steel frame that helps reduce build times and improve quality control, especially compared to timber and concrete, across a wide range of projects.
At NW Metal Sections, we produce a wide range of precision cold roll-formed steel sections that form the core of modular framing systems. With a focus on quality, consistency and expert support, we are a trusted supplier for steel-framed building projects throughout the UK.
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Our steel framework profiles
NW Metal Sections supplies a variety of cold roll-formed profiles for use in modular steel frame systems. All products are manufactured to tight tolerances using certified steel and can be tailored to suit your specific design needs.
The types of modular steel frame systems we produce are:
- C Sections – Ideal for vertical steel columns and wall studs, joists and general framing.
- Z Sections – Commonly used in overlapping roof and floor structures.
- Sigma Sections – Provide enhanced stiffness for structural applications.
- Top Hat Sections – Suitable for internal partitioning and lightweight steel frames.
Each section is produced with consistency and quality in mind, ready for fast and efficient assembly to ensure your project remains on time.

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What are the advantages of modular steel frame systems?
Modular steel frame systems are a cost-effective, high-performance solution with a variety of benefits, including:
Faster Construction
Components are produced in a controlled environment and delivered ready to install, reducing time spent on site and allowing for more predictable project timelines when compared with traditional construction methods.
Lightweight and Strong
Cold roll-formed steel offers excellent structural integrity while remaining lightweight. This makes the material easier to handle and transport, particularly in space-restricted or remote locations.
Flexible Design
Modular systems are highly adaptable. Steel framing can be tailored to suit a range of installation layouts and performance requirements, making it suitable for housing, commercial builds and temporary structures.
Cleaner, More Sustainable Building
With precise manufacturing and reduced on-site waste, modular framing supports more sustainable construction practices. Steel is also fully recyclable and can be reused in future projects.
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Why choose NW Metal Sections for the efficient construction of modular steel framework?
We are one of the UK’s leading manufacturers of cold roll-formed steel sections, supplying a wide range of industries with precision-engineered steel structure components. Our team of experts combines technical knowledge with advanced machinery to deliver a reliable and efficient service from start to finish.
Our service involves:
- Precision cold roll-forming
- In-house tooling and customisation
- Reliable lead times
- Quality-assured steel products
- Nationwide delivery
Whether you’re producing modular homes, site cabins, flat roofs, external walls or prefabricated commercial buildings, we can support your project with high-quality framing solutions built to last.

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If our standard profiles do not exactly meet your requirements, please contact us. We would be pleased to advise you! For more information or questions about our cold-rolled top hat sections or to request a quote for your next project, contact NW Metal Sections today.
Frequently Asked Questions
What standards and certifications do your steel frame sections meet?
Our cold roll-formed sections are manufactured from certified structural steel coil to BS EN 10346, in grades S280GD, S350GD and S450GD, selected to suit the load and span. Galvanised coatings range from Z275 for standard internal use up to Z350 and Z450 for more exposed or corrosive environments. As a business, we have held ISO 9001:2015 certification since 2016. For any project, we can confirm the exact grade, gauge and coating for the section you need.
What spans and load capacities can modular steel framing achieve?
There is no single figure. Capacity depends on the section profile, steel grade, material thickness and the spacing and span of the frame, so the safe load for a wall stud differs from a floor joist or roof member. We size sections against the loads and spans in your design rather than working from fixed tables. Send us your layout and loading requirements, and our technical team will specify the right section.
How does modular steel framing compare to timber or concrete?
Each material has its place, but cold roll-formed steel offers a particular mix of speed, consistency and durability.
Compared with timber, steel is non-combustible and dimensionally stable. It will not warp, shrink, or rot, and every section performs to a consistent, certified strength rather than varying piece to piece.
Compared with concrete, steel framing is lighter, which lowers foundation loads, and it is assembled dry rather than cured on site, so it avoids the weather dependence and waiting time of wet trades. Steel frames are also easier to alter or extend later, and the material is fully recyclable at the end of its life.
The biggest trade-off is thermal performance. Steel conducts heat, so a steel frame must be detailed with appropriate insulation and thermal breaks to meet building regulations. When handled at the design stage, this is routine rather than a barrier.
Whichever route suits your build, our sections are made to order and sized to your loads and spans.
Custom & Bespoke
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Get In Touch
If you need more information then please don’t hesistate to get in touch with us via our online contact form or give us a call on: 01744 886980