Company lists · Data refreshed September 2026

Top 25 Structural welding companies based in Portugal

Name: Structural welding companies based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 152 companies tracked

RevenueBase identified 152 structural welding companies headquartered in Portugal as of September 2026 and tracks 1,539 professional contacts across them, including 392 with verified work emails. Maia is the largest hub.

This list covers structural welding companies headquartered in Portugal, 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 22, 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 22, 2026 86% judged on-target in blind review

152Companies

1,539Contacts tracked

392Verified emails

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The 25 largest structural welding companies based in Portugal

Ranked by team size

Top 25 of 152 structural welding companies based in Portugal, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to structural welding companies: 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	Martifer Metallic Constructions	Indirect evidence	Oliveira De Frades, PortugalHQ checked Sep 22, 2026	1,001-5,000	257 contacts →
	Indirect evidence “Martifer Metallic Constructions is a global player in the metallic construction sector.” Source: RevenueBase Database · checked Sep 22, 2026
2	Motrinde	Indirect evidence	Quintã Do Loureiro, PortugalHQ checked Sep 22, 2026	201-500	112 contacts →
	Indirect evidence “Motrinde is a company dedicated to working in the field of metal mechanics, industrial maintenance and metal constructions.” Source: RevenueBase Database · checked Sep 22, 2026
3	EME Singular	Indirect evidence	Barcelos, PortugalHQ checked Sep 22, 2026	51-200	82 contacts →
	Indirect evidence “Since its foundation, the mission of EME Singular has been to respond to the evolving needs that the market presents, fulfilling requirements for quality and quickness…” Source: RevenueBase Database · checked Sep 22, 2026
4	Grupo Electrofer	Indirect evidence	Marinha Grande, PortugalHQ checked Sep 22, 2026	201-500	80 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
5	Metaloviana, SA	Partial evidence	Viana Do Castelo, PortugalHQ checked Sep 22, 2026	51-200	53 contacts →
	Partial evidence “Metaloviana, SA is a portuguese manufacturer and supplier of various metal structures.” Source: RevenueBase Database · checked Sep 22, 2026
6	Arestalfer	Indirect evidence	Sever Do Vouga, PortugalHQ checked Sep 22, 2026	51-200	42 contacts →
	Indirect evidence “Arestalfer is a company with several decades of activity working in the metallic construction sector.” Source: RevenueBase Database · checked Sep 22, 2026
7	Btl- Indústrias Metalúrgicas SA	Indirect evidence	Ossela, PortugalHQ checked Sep 22, 2026	51-200	41 contacts →
	Indirect evidence “BTL - Indústrias Metalúrgicas, S.A.” Source: RevenueBase Database · checked Sep 22, 2026
8	Manuaço, S.A	Indirect evidence	Porto, PortugalHQ checked Sep 22, 2026	51-200	31 contacts →
	Indirect evidence “Manuaço - Metálica de Construção e Imagem A Manuaço detém de uma vasta experiência na área da serralharia e tem vindo sempre a crescer ao longo dos anos.” Source: RevenueBase Database · checked Sep 22, 2026
9	TIMP	Indirect evidence	Lisbon, PortugalHQ checked Sep 22, 2026	11-50	27 contacts →
	Indirect evidence “TISSOT Industrie \| Excelência industrial sob medida desde 1942.” Source: RevenueBase Database · checked Sep 22, 2026
10	William Hare Portugal LDA	Indirect evidence	Porto, PortugalHQ checked Sep 22, 2026	1,001-5,000	23 contacts →
	Indirect evidence “A global leader in engineered steel solutions, delivering innovative and sustainable projects for our clients worldwide.” Source: RevenueBase Database · checked Sep 22, 2026
11	Setrova	Indirect evidence	Sines, PortugalHQ checked Sep 22, 2026	51-200	22 contacts →
	Indirect evidence “A empresa SETROVA - Execução de Projectos, Lda, foi fundada em 1983 tendo como objecto social a execução de projectos fabris, representações e assistência técnica metalúrgica.” Source: RevenueBase Database · checked Sep 22, 2026
12	Duartesfer	Partial evidence	Barcelos, PortugalHQ checked Sep 22, 2026	51-200	19 contacts →
	Partial evidence “Duartesfer initially focused on the construction of factory structures and warehouses, today, after 20 years of implementation in the domestic and currently in the international…” Source: RevenueBase Database · checked Sep 22, 2026
13	Jotainox	Partial evidence	Vila Nova De Famalicão, PortugalHQ checked Sep 22, 2026	51-200	18 contacts →
	Partial evidence “We are fully committed in everything we do We operate in the welding and metal processing business, and we have specialized in stainless steel and carbon steel.” Source: RevenueBase Database · checked Sep 22, 2026
14	Grownor - Metal, LDA	Indirect evidence	Póvoa De Varzim, PortugalHQ checked Sep 22, 2026	11-50	16 contacts →
	Indirect evidence “A Grownor – Metal, Lda, fundada em 28 de maio de 2013, desenvolve a sua atividade no âmbito da construção e montagem de estruturas e revestimentos metálicos e assume-se como um…” Source: RevenueBase Database · checked Sep 22, 2026
15	Triunfo Portugal	Indirect evidence	Vila Nova De Gaia, PortugalHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “Company specialized in supplying labor.” Source: RevenueBase Database · checked Sep 22, 2026
16	O Setenta	Indirect evidence	Braga, PortugalHQ checked Sep 22, 2026	51-200	14 contacts →
	Indirect evidence “Fundada em 1964, dedica-se à construção de estruturas metálicas, caixilharias em aço, aço inox e alumínio.” Source: RevenueBase Database · checked Sep 22, 2026
17	Carlos V. Rebelo Lda, Construções Metálicas E Indústrias Metalomecânicas	Indirect evidence	Santarém, PortugalHQ checked Sep 22, 2026	51-200	13 contacts →
	Indirect evidence “Empresa familiar na área da metalúrgica, sendo uma actividade bastante desenvolvida no concelho, opera desde 2006 ao serviço do setor agrícola, assistência fabril, construção…” Source: RevenueBase Database · checked Sep 22, 2026
18	João Monteiro E Filhos, LDA	Indirect evidence	Marco De Canaveses, PortugalHQ checked Sep 22, 2026	1-10	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
19	UMM	Indirect evidence	Lisboa, PortugalHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “UMM is a metalwork company from Lisbon.” Source: RevenueBase Database · checked Sep 22, 2026
20	Manuel Lopes Curval & Filhos LDA	Partial evidence	Vila Do Conde, PortugalHQ checked Sep 22, 2026	11-50	9 contacts →
	Partial evidence “Robotic Welding; Balancing to 25T; Turning large pieces; Calendaring plate up to 42mm thick and 3m wide; Cutting oxyfuel / plasma up to 300mm in CNC; All types of boiler and…” Source: RevenueBase Database · checked Sep 22, 2026
21	Embeiral Steel	Partial evidence	Viseu, PortugalHQ checked Sep 22, 2026	11-50	9 contacts →
	Partial evidence “Founded on June 12, 2018, Embeiral Steel is dedicated to the execution, transformation and application of all types of Metallic Structures, Industrial Pavilions, Metallic…” Source: RevenueBase Database · checked Sep 22, 2026
22	M2c	Indirect evidence	Torres Vedras, PortugalHQ checked Sep 22, 2026	11-50	9 contacts →
	Indirect evidence “We are a reference company in the metal construction sector, specializing in the following processes: DESIGN AND PROJECTION We idealize, develop projects and distinguish ourselves…” Source: RevenueBase Database · checked Sep 22, 2026
23	Fiel Serralharia, LDA	Indirect evidence	PortugalHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
24	Vapor Ilhas Montagens Técnicas E Industriais, LDA	Indirect evidence	Machico, PortugalHQ checked Sep 22, 2026	11-50	8 contacts →
	Indirect evidence “A Vapor ilhas é uma empresa solidamente implantada no mercado regional da Madeira desde 2004 e que se tem expandido com obras em no Reino Unido, Mali e Arábia Saudita desde 2012.” Source: RevenueBase Database · checked Sep 22, 2026
25	JTP Steel	Indirect evidence	Eiriz, PortugalHQ checked Sep 22, 2026	11-50	8 contacts →
	Indirect evidence “Founded in 1975, JTP Steel Lda.” Source: RevenueBase Database · checked Sep 22, 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 welding companies. 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 welding companies.
Partial evidence: Its own public description names part of structural welding companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name structural welding companies. 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 152 structural welding companies based in Portugal

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Structural welding companies based in Portugal at a glance

As of Sep 22, 2026

25.5%Verified-email coverage

10.1Average contacts per company

11-50Median size (employees)

3.9%Largest-city concentration · Maia

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Portugal, so it is reported there. Company counts and contact totals on this page are exact for Portugal, over 152 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 welding companies, 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 Portugal whose own description of what they do matches “structural welding companies”. 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 welding companies), 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 welding companies, and records with no verified work email. Companies headquartered outside Portugal 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, 392 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 22, 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 welding companies, 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 welding companies are there based in Portugal?

RevenueBase identified 152 structural welding companies headquartered in Portugal 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?

Martifer Metallic Constructions, headquartered in Oliveira De Frades, tops this list with the largest team on record.

Which city has the most structural welding companies?

Maia leads with 6 headquartered companies, followed by Aveiro (4) and Viana Do Castelo (4).

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 392 verified decision-maker contacts tracked across these 152 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 22, 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.