Agricultural Steel for Farm Buildings Across the South West

Steel has long been the material of choice for agricultural buildings across the UK, and for good reason. Whether you are putting up a new barn in Somerset, a grain store near Taunton, or equestrian buildings on a rural site in Devon, agricultural steel offers the durability, strength, and longevity that timber simply cannot match.

At South West Steel Supplies, we have been supplying agricultural steel to farmers, contractors, and rural landowners across the South West for over 20 years. Based at our 4,000 m² site in Portishead, we hold an extensive range of mild steel products in stock, including structural steelwork suitable for farm buildings of all types.

Why Steel is the Right Choice for Agricultural Buildings

So, you may be asking: why is steel the best material for agricultural buildings? From our two decades of experience supplying farmers and rural contractors, the answer comes down to performance, safety, and long-term value.

Steel-framed agricultural buildings are non-combustible, which reduces fire hazards on farms particularly important when storing dry hay or housing livestock. Steel structures are also designed to withstand high wind speeds of up to 120 MPH, heavy snow loads, and torrential rain, making them well-suited to the South West’s varied weather conditions.

Unlike timber, steel does not rot, warp, or suffer from termite infestations, significantly extending a building’s lifespan to 50 years or more. Steel frames allow for clear-span designs, maximising usable space for machinery, livestock, or bulk storage without the need for internal supports.

Steel-framed agricultural buildings can be designed for a wide range of purposes, including livestock housing, grain storage, and machinery workshops. Agricultural buildings constructed from steel are often tailored to meet specific operational needs, including layout, access, and future expansion plans.

Mild Steel and Galvanised Box Sections for Farm Use

For agricultural construction, mild steel box section and galvanised box sections are among the most frequently used products. Galvanised box sections are manufactured to precise standards, ensuring consistency, strength, and durability, making them suitable for various construction applications. These box sections provide excellent corrosion resistance, which is essential for longevity in agricultural environments.

Galvanised box sections are commonly available in both rectangular and square shapes and are typically made from S235JRH grade steel, which is known for its high performance in structural applications. We stock both options at competitive prices, with a precision cut-to-size service to reduce on-site waste and speed up your build.

For steel-framed structures that need long-term weather resistance whether for barns, kit buildings, or roller shutter door frames galvanised steel is the practical choice. You can order galvanised box sections directly from our Portishead site with fast turnaround and delivery by our own 6-truck fleet.

Structural Steelwork for Every Agricultural Project

Agricultural steel is the foundational material for modern farming, chosen for its high tensile strength, durability, and resistance to wear and tear in harsh conditions. Our range covers everything needed for steel framed agricultural buildings, from RSJ beams and parallel flange channels through to steel angles used in bracing, purlins, and cladding rails.

Agricultural steel structures must be designed and fabricated to meet specific standards including BS 5502 for agricultural buildings ensuring safety and performance in demanding environments. Steel fabrication involves the process of cutting, shaping, and assembling steel structures to meet specific design requirements, and installation requires skilled labour to ensure safety and compliance with building regulations.

Our knowledgeable team can provide expert advice on the right products for your project, whether you are building a grain store, hay barn, machinery workshop, or equestrian building. We are UKCA/CE and BSEN1090 (British Standard EN 1090) accredited, so every product we supply meets the relevant compliance standards with full traceability and no shortcuts. Get in touch with our team today for a free, no-obligation quote.

Delivering Agricultural Steel Across Somerset and the South West

We deliver agricultural steel across the South West and into South Wales, covering Somerset, Bristol, Bath, Gloucester, Taunton, Yeovil, and beyond. Whether you are a farmer in the Mendips or a contractor working on a rural site near Taunton or Somerset, we can get your steel to site quickly, cut to your specification.

Carbon steel is used for constructing large storage units such as silos and grain bins to protect grain from pests and moisture, and steel silos offer excellent resistance to moisture, preventing rust and ensuring grain, feed, or produce remains dry and free from mould. For tanks and liquid storage, stainless steel is frequently used to store liquids such as fuel, water, or chemical fertilisers safely on site.

For further guidance on agricultural building standards in the UK, the Health and Safety Executive’s agricultural resources provide useful reference information. The Steel Construction Institute also publishes technical guidance on steel building design for agricultural and industrial applications.

Ready to start your agricultural steel project? Contact South West Steel Supplies today or visit our Portishead stockholding site to discuss your requirements. Cut to size. In stock. Delivered by our own fleet.

Frequently Asked Questions About Agricultural Steel

Do galvanised box sections lose their corrosion resistance over time?

Galvanised box sections provide excellent corrosion resistance, which is essential for longevity in both construction and agricultural environments. The zinc coating does gradually decrease in effectiveness over time, particularly in harsh or highly acidic conditions.

Is agricultural steel used in farm machinery as well as buildings?

Yes. Steel is used extensively across modern farming equipment, not just structures. High-strength steel is used to create lightweight, rigid, and long sprayer booms for spreading chemicals, while structural steel provides the durability necessary for tractor chassis and frames for pulling heavy implements.

What type of steel is used for agricultural machinery components?

High-Strength Low-Alloy (HSLA) steel is used to create stronger, lighter, and more fuel-efficient machinery components across modern agricultural equipment.

Can South West Steel Supplies provide steel for farm machinery repairs as well as buildings?

We primarily supply structural steel for agricultural buildings, including mild steel box sections, RSJ beams, parallel flange channels, and steel angles. While we do not fabricate machinery components, we can supply the steel your fabricator needs for repairs, frames, or bespoke agricultural projects.