Steel fabrication in West Wales: what it covers and how to compare quotes
MGC West Wales designs, fabricates and erects structural steelwork from our base in Aberaeron, Ceredigion. If you are adding an extension, opening up rooms with steel beams, building a new-frame home, or need commercial or agricultural steelwork, a single design-and-build team keeps drawing, fabrication and installation under one point of contact.
What does a steel fabrication company do?
Fabrication is the link between the engineer’s calculation and a beam that actually fits the opening.
Marking out
From structural engineer drawings so every beam, column and frame is cut to the right length and hole positions.
Sawing and shearing
To length, with notched or cope-cut ends where steel sits into walls or onto other members.
Drilling and punching
Bolt holes, slots and fixture points to the project’s connection detail.
Welding and finishing
MIG, TIG or stick welding plus shot-blasting, galvanising or intumescent paint for fire-rated members.
Trial assembly
Complex frames are trial-fitted in the yard so site fitting is faster and more accurate.
Delivery and erection
On site with suitable lifting, temporary propping, levelling and grouting.
Fabrication is not just cutting and welding. It is the link between the engineer’s calculation and a beam that actually fits the opening.
What is steel fabrication used for in West Wales?
The jobs we fabricate steel for fall into a few clear groups.
We work across Ceredigion, Carmarthenshire and Pembrokeshire, and travel into South Wales for larger or linked projects. Being based in Aberaeron means site visits in Cardigan, Lampeter, Haverfordwest and Llanelli are practical decisions, not a day trip from Cardiff.
Domestic steelwork
Extensions
Steel beams to open up rear or side walls, knock-throughs, and ridge/floor beams for wrap-around builds.
Loft conversions
Ridge beams, floor joists, dormer frames and steel stair stringers.
Internal remodelling
Removing chimney breasts or load-bearing walls with correctly sized goal-post frames.
New-build houses
Light steel or hybrid frames where the design calls for it.
Agricultural and commercial steelwork
- Portal frames, machine sheds and barn extensions.
- Mezzanine floors and staircases for workshops and retail units.
- Canopies, gates, railings and small bridges.
How to compare quotes for structural steel
The cheapest line on a quote is rarely the cheapest job once extras, crane hire and site delays are added.
What is included: detailing, fabrication, delivery, off-loading, erection, temporary works, and final grouting.
Steel grade and origin: S275 or S355 are common structural grades. Ask for mill certificates if traceability matters.
Finish specification: bare steel, shot-blasted and primed, hot-dip galvanised, or intumescent fire coating.
Tolerances: length, squareness, hole pitch and twist should match the project specification.
Connections: bolted site joints, welded end plates, or a mix. Changes after approval are where variations creep in.
Access and lifting: narrow lanes, tight sites and poor ground can affect crane size and cost.
Send this for an accurate, fixed quote
- Architectural plans showing openings and beam positions.
- Structural engineer’s calculations and sketch details.
- Site photos and access notes (lane width, parking, overhead lines).
- Your preferred programme so we can schedule shop time and erection.
If you only have drawings for an extension, that is enough to start. We can review the steel schedule and flag anything that looks over- or under-specified before we quote.
Quality, tolerances and standards
Good steelwork is measured twice: once in the shop and once on site.
Material
Sections are checked against mill certificates so the grade and origin are known.
Cutting and drilling
Dimensions and hole positions are checked against the fabrication drawing before leaving the yard.
Welding
Procedures and welder qualifications are matched to the specification and steel grade.
Visual inspection
Weld profiles, surface preparation and coating thickness are checked before despatch.
Dimensional checks
Plumb, level, twist and bolt tightness are recorded on erection before handover.
Structural steelwork in the UK is covered by British and European standards for execution, tolerances and welding procedure. We work to the project specification and the relevant standards for the steel grade and finish chosen.
Steel fabrication FAQ
Straight answers to the questions people ask when they are scoping a steel fabrication job in West Wales.
Send your drawings for a fixed steel quote
If you have structural engineer drawings, upload them and we will return a fixed quote that lists steelwork, finishes, delivery and erection — with no hidden extras.
Steelwork is often part of a larger project
If your job also needs design-and-build delivery, these services are handled by the same team.
New builds & extensions
Design-and-build extensions and new-frame homes where steel beams open up space and carry the structure.
Loft conversions
Ridge beams, floor joists and dormer frames that make a loft conversion structurally sound.
Send your drawings for a steel quote
Fixed quotes on structural steelwork across West Wales — from extensions and loft conversions to agricultural and commercial frames.