Company lists · Data refreshed September 2026

Top 25 Structural steel contractors based in Ireland

Name: Structural steel contractors based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 80 companies tracked

RevenueBase identified 80 structural steel contractors headquartered in Ireland as of September 2026 and tracks 707 professional contacts across them, including 278 with verified work emails. Dublin is the largest hub.

This list covers structural steel contractors headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review

80Companies

707Contacts tracked

278Verified emails

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The 25 largest structural steel contractors based in Ireland

Ranked by team size

Top 25 of 80 structural steel contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to structural steel contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Kiernan Steel	Strong evidence	Longford, IrelandHQ checked Sep 18, 2026	51-200	82 contacts →
	Strong evidence “You are here: Home / About / History History Kiernan Structural Steel Ltd.” Source: RevenueBase Database · checked Sep 18, 2026
2	Brodeen Engineering	Indirect evidence	Tipperary, IrelandHQ checked Sep 18, 2026	11-50	48 contacts →
	Indirect evidence “Distinguished from other contracts by its off-site fabrication abilities, quality assurance and turnkey solutions, Brodeen Engineering is a highly-specialised engineering partner…” Source: RevenueBase Database · checked Sep 18, 2026
3	O'carroll Engineering	Partial evidence	Killarney, IrelandHQ checked Sep 18, 2026	51-200	39 contacts →
	Partial evidence “O’Carroll Engineering (OCE) is a leader in off-site steel fabrication, delivering volume solutions that empower clients to realise their metalwork visions.” Source: RevenueBase Database · checked Sep 18, 2026
4	Wall Steel	Partial evidence	New Ross, IrelandHQ checked Sep 18, 2026	51-200	28 contacts →
	Partial evidence “Wall Steel is a family run business that was established in 1986.” Source: RevenueBase Database · checked Sep 18, 2026
5	Jamestown Manufacturing LTD	Partial evidence	Portarlington, IrelandHQ checked Sep 18, 2026	51-200	24 contacts →
	Partial evidence “Jamestown Manufacturing - Shaping Steel to meet your Requirements.” Source: RevenueBase Database · checked Sep 18, 2026
6	F&m Whelan Steel Engineering	Partial evidence	Duncormick, IrelandHQ checked Sep 18, 2026	11-50	23 contacts →
	Partial evidence “F&M Whelan Steel Engineering is a specialist steel fabrication and erection company, delivering engineered solutions across Ireland and Europe.” Source: RevenueBase Database · checked Sep 18, 2026
7	ARC Engineering LTD	Indirect evidence	Foulksmills, IrelandHQ checked Sep 18, 2026	11-50	21 contacts →
	Indirect evidence “ARC ENGINEERING are one of Ireland’s leading architectural metalworks companies.” Source: RevenueBase Database · checked Sep 18, 2026
8	Adsl Group	Strong evidence	Dublin 12, IrelandHQ checked Sep 18, 2026	11-50	20 contacts →
	Strong evidence “ADSL GROUP Experts in Miscellaneous & Structural Steel Detailing and 3D Modelling We turn complex structural steel designs into practical and buildable solutions.” Source: RevenueBase Database · checked Sep 18, 2026
9	Peterson Manufacturing LTD	Indirect evidence	Dublin 12, IrelandHQ checked Sep 18, 2026	51-200	20 contacts →
	Indirect evidence “Peterson Manufacturing Ltd is a precision engineering and fabrication company based in Ireland, delivering high-quality manufacturing solutions since 1992.” Source: RevenueBase Database · checked Sep 18, 2026
10	Steel & Roofing Systems	Strong evidence	Kilkenny, IrelandHQ checked Sep 18, 2026	51-200	19 contacts →
	Strong evidence “Steel & Roofing Systems is one of Ireland's leading structural steelwork fabricators and erectors.” Source: RevenueBase Database · checked Sep 18, 2026
11	KH Engineering LTD	Strong evidence	Allenwood, IrelandHQ checked Sep 18, 2026	51-200	18 contacts →
	Strong evidence “We are structural steel fabricators and erectors with a sizeable firm, operating from a foot modern state of the art factory producing up to 200 te per week of fabricated and…” Source: RevenueBase Database · checked Sep 18, 2026
12	BBSF	Partial evidence	Dublin 11, IrelandHQ checked Sep 18, 2026	11-50	17 contacts →
	Partial evidence “BBSF (Brendan Buggy Steel Fabrication Limited) was founded in 1982 by Brendan Buggy.” Source: RevenueBase Database · checked Sep 18, 2026
13	Mack Engineering	Partial evidence	Nenagh, IrelandHQ checked Sep 18, 2026	51-200	17 contacts →
	Partial evidence “With CE Certification to Execution Class 4 in both the Design and Fabrication of Structural Steelwork we are qualified and capable of delivering on even the most complex and…” Source: RevenueBase Database · checked Sep 18, 2026
14	O'donovan Engineering LTD	Indirect evidence	Coachford, IrelandHQ checked Sep 18, 2026	51-200	15 contacts →
	Indirect evidence “Welcome to O’Donovan Engineering – a family-owned, professionally run company located in Coachford, Co Cork, Ireland.” Source: RevenueBase Database · checked Sep 18, 2026
15	Gleeson Steel & Engineering LTD	Partial evidence	Thurles, IrelandHQ checked Sep 18, 2026	11-50	15 contacts →
	Partial evidence “Gleeson Steel and Engineering Ltd is a family run company, founded in 1968.” Source: RevenueBase Database · checked Sep 18, 2026
16	Leonard Engineering Ballybay LTD	Strong evidence	Ballybay, IrelandHQ checked Sep 18, 2026	51-200	13 contacts →
	Strong evidence “Leonard Engineering (Ballybay) Ltd are one of the leading Structural Steel fabricators in Ireland.” Source: RevenueBase Database · checked Sep 18, 2026
17	Duggan Steel Group	Partial evidence	Kilkenny, IrelandHQ checked Sep 18, 2026	51-200	8 contacts →
	Partial evidence “The Duggan Steel Group, incorporating Duggan Steel (Irl) Ltd and Duggan Profiles & Steel Service Centre Ltd, was established in 1976.” Source: RevenueBase Database · checked Sep 18, 2026
18	Leonard Steel LTD	Strong evidence	Monaghan, IrelandHQ checked Sep 18, 2026	11-50	7 contacts →
	Strong evidence “Founded in 1976, Leonard Steel are renowned for their work as Structural Steel Specialists throughout Ireland and internationally.” Source: RevenueBase Database · checked Sep 18, 2026
19	Extreme Steel	Partial evidence	Newcastle, IrelandHQ checked Sep 18, 2026	11-50	7 contacts →
	Partial evidence “At Extreme Steel, we want to ensure that our customers feel that they are receiving the best consultation and advice in the industry.” Source: RevenueBase Database · checked Sep 18, 2026
20	Mcmenamin Engineering	Indirect evidence	Killygordon, IrelandHQ checked Sep 18, 2026	11-50	6 contacts →
	Indirect evidence “McMenamin Engineering has accumulated 40 years’ worth of experience and knowledge since it was established in 1986 by Seamus McMenamin.” Source: RevenueBase Database · checked Sep 18, 2026
21	Shanks Engineering LTD	Strong evidence	Co. Monaghan, IrelandHQ checked Sep 18, 2026	11-50	5 contacts →
	Strong evidence “Shanks Engineering Ltd is an award winning family run business specialising in structural steel manufacture and erection, agricultural, commercial and industrial fabrication and…” Source: RevenueBase Database · checked Sep 18, 2026
22	Corby Steel Fabrications LTD	Partial evidence	Newtowngore, IrelandHQ checked Sep 18, 2026	11-50	5 contacts →
	Partial evidence “Corby Steel Fabrications Ltd is a leading provider of high-quality steel fabrication and mechanical engineering solutions.” Source: RevenueBase Database · checked Sep 18, 2026
23	Gabbett Industries Limited	Strong evidence	Wexford, IrelandHQ checked Sep 18, 2026	11-50	5 contacts →
	Strong evidence “What We Do Structural & Secondary Steelwork Throughout Ireland & UK Since 1983 We manufacture and install architectural metalwork and structural steel to CE accredited standards…” Source: RevenueBase Database · checked Sep 18, 2026
24	Sean Brady Construction And Engineering LTD	Strong evidence	Killeshandra, IrelandHQ checked Sep 18, 2026	11-50	4 contacts →
	Strong evidence “Over the last 20 years, Brady Construction and Engineering has established itself as one of Ireland's leading structural steel fabrication and cladding organisations.” Source: RevenueBase Database · checked Sep 18, 2026
25	JTE	Partial evidence	Crossakiel, IrelandHQ checked Sep 18, 2026	11-50	4 contacts →
	Partial evidence “JTE specializes in the design, manufacture and construction of bespoke steel-framed buildings suitable for a wide range of applications.” Source: RevenueBase Database · checked Sep 18, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: structural steel contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names structural steel contractors.
Partial evidence: Its own public description names part of structural steel contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name structural steel contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 80 structural steel contractors based in Ireland

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Structural steel contractors based in Ireland at a glance

As of Sep 18, 2026

39.3%Verified-email coverage

8.8Average contacts per company

11-50Median size (employees)

7.5%Largest-city concentration · Dublin

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 80 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among structural steel contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Ireland whose own description of what they do matches “structural steel contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names structural steel contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among structural steel contractors, and records with no verified work email. Companies headquartered outside Ireland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 278 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 18, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names structural steel contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many structural steel contractors are there based in Ireland?

RevenueBase identified 80 structural steel contractors headquartered in Ireland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Kiernan Steel, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most structural steel contractors?

Dublin leads with 6 headquartered companies, followed by Kilkenny (3) and Ireland (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 278 verified decision-maker contacts tracked across these 80 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.