
Structural Steels in Cardiff
Our structural steel fabrication service supports construction projects of every size, supplying precision-engineered beams, columns, frames, and bespoke steelwork manufactured to meet the highest quality and safety standards.
Precision-Fabricated Structural Steelwork for Construction Projects in Cardiff, Newport & South Wales
AB Metal Fabricators provides high-specification structural steels for the growing Welsh construction industry. From steel beams and columns to full structural frameworks, our steel structures and building materials are engineered to deliver exceptional performance, meet regulatory standards, and integrate seamlessly into your build schedule.
Working with contractors, developers, architects, and engineers across Cardiff, Newport, and the surrounding areas, we’ve established a reputation for delivering structural steelwork that meets technical demands and tight timelines. With over 50 years of combined industry experience and a fully equipped Caerphilly-based facility, we support construction projects of every scale, from small commercial developments to multi-storey residential builds.
Our expertise extends to complementary fabrication services, such as designing and building steel frame balconies, metal fire escapes, and custom railings.


Fabricated to the Highest Standards
Our structural steel products are designed and fabricated in accordance with BS EN 1090, making CE marking mandatory for all load-bearing elements. We work strictly within these parameters, ensuring that everything we produce meets or exceeds the structural safety and traceability requirements outlined in Building Regulations Part A.
Our in-house design team can work from client drawings or develop precise CAD plans tailored to your project. We then cut, shape, drill, and weld each component using high-performance machinery and rigorous quality control procedures. AB Metal Fabricators also offers protective treatments such as priming, galvanising, and intumescent coatings as required.
We manufacture and supply:
- RSJs (Rolled Steel Joists) and Universal Beams for structural support.
- Columns and Box Sections for vertical loads and framework.
- Trusses and Bracing Systems for roof structures and lateral support.
- Spliced Beams and Cleats for transport-friendly installations.
- Base Plates, End Plates and Connection Details to simplify on-site assembly.
Our experienced installation team can deliver or erect all structural steels to the site, ensuring proper alignment, bolting, and compliance with design tolerances.
Building Steel for Residential & Commercial Projects
We’ve delivered structural steel for various construction projects across South Wales. Our portfolio includes beams and supports for large residential extensions in Newport, full steel skeletons for commercial units in Cardiff business parks, roof trusses and floor structures for office-to-flat conversions, and bracing systems with columns for industrial warehouse refurbishments.
With the right steel structures in place, your construction project gains strength, stability, and long-term performance, supported by a team that understands the demands and responsibilities of working on active building sites.


Supporting Every Stage of Construction
As a trusted steel fabricator for the construction sector, we understand that timing, communication, and coordination are key. We work proactively with site managers or project leads to avoid delays, reduce rework, and ensure safe, efficient installations.
We’re equipped to support:
- New Builds – Supplying steel frameworks, beams, and columns for housing developments, apartment blocks, retail units, and more.
- Extensions & Structural Alterations – Fabricating load-bearing beams, portal frames and support structures for property expansions and refurbishments.
- Steel Frame Buildings – Producing complete frame systems for commercial, industrial, and agricultural buildings.
- Pre-Fabricated Kits – Delivering ready-to-assemble steel packages with marked components and fixings for efficient on-site builds.
- Prototyping & Custom Fabrication – Helping develop bespoke structural elements for specialist projects.
Why Choose AB Metal Fabricators?
- Industry Knowledge – Decades of experience working alongside construction professionals across the public and private sectors.
- Total Reliability – We meet deadlines, maintain consistent quality, and communicate clearly throughout the project.
- Full Certification – All load-bearing steel is CE marked to BS EN 1090 standards and supported by detailed documentation.
Our Caerphilly facility allows us to handle one-off requests and bulk orders with repeatable precision. Whether you need a single beam or a fully fabricated steel structure, we provide the same level of attention, accuracy, and professionalism.

FAQs – Structural Steels
Structural calculations are typically carried out by a structural engineer. Once the designs have been approved, we fabricate the steelwork to the specified dimensions and tolerances, working closely with engineers, architects, and contractors throughout the project.
Structural steel is used to create the load-bearing framework of buildings and other structures. Common applications include steel beams, columns, roof trusses, floor supports, portal frames, mezzanine floors, and structural frameworks for residential, commercial, and industrial developments.
Structural steel components are fabricated using detailed engineering drawings before being cut, drilled, welded, and assembled to precise specifications. Each component undergoes quality checks to ensure it meets the required structural and safety standards before delivery or installation.
Structural steel offers excellent strength, durability, and versatility while allowing faster construction compared with many traditional building methods. It also provides long spans with fewer supporting columns, making it a popular choice for residential, commercial, and industrial projects.
Yes. Structural steel used in exposed environments is often protected with treatments such as galvanising, priming, or specialist coatings to help prevent corrosion and extend its service life. The most appropriate finish depends on the building’s location, intended use, and environmental conditions.

Get the Steelwork Right—From the Start
When precision matters and timelines are tight, AB Metal Fabricators is the team you can rely on. With decades of experience, CE-certified fabrication, and a focus on construction industry needs, we’re the first choice for structural steels in Cardiff, Newport, and the surrounding areas.
To request a quote, discuss your drawings, or arrange a site delivery, contact our team today on 07983 637653. We’re here to keep your project on solid ground.