Company lists · Data refreshed September 2026

Top 25 Specialized welding contractors based in Brazil

Name: Specialized welding contractors based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 508 companies tracked

RevenueBase identified 508 specialized welding contractors headquartered in Brazil as of September 2026 and tracks 6,927 professional contacts across them, including 443 with verified work emails. Sao Paulo is the largest hub.

This list covers specialized welding contractors headquartered in Brazil, 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

508Companies

6,927Contacts tracked

443Verified emails

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The 25 largest specialized welding contractors based in Brazil

Ranked by team size

Top 25 of 508 specialized welding contractors based in Brazil, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to specialized welding 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	Alfa Engenharia E Montagens Industriais	Indirect evidence	Itaúna, BrazilHQ checked Sep 18, 2026	1,001-5,000	1,106 contacts →
	Indirect evidence “A Alfa Engenharia é uma empresa com 35 anos de mercado, especializada em fabricação de estruturas metálicas, caldeirarias e equipamentos industriais, além de contar com a unidade…” Source: RevenueBase Database · checked Sep 18, 2026
2	Engemec Serviços DE Manutenção Ltda	Indirect evidence	Rio Piracicaba, BrazilHQ checked Sep 18, 2026	501-1,000	332 contacts →
	Indirect evidence “Somos a ENGEMEC ENGENHARIA, uma empresa fundada em 2009, certificada na NBR ISO 9001:2015, e também na NBR ISO 45001:2024, com foco em fabricação de estruturas metálicas de…” Source: RevenueBase Database · checked Sep 18, 2026
3	Projeart Indústria DE Soluções Tecnológicas EM AÇO	Indirect evidence	Eusébio, BrazilHQ checked Sep 18, 2026	1,001-5,000	250 contacts →
	Indirect evidence “A Projeart é referência nacional em soluções metálicas sob medida para os setores industrial, logístico e de infraestrutura.” Source: RevenueBase Database · checked Sep 18, 2026
4	ICEC	Indirect evidence	São Paulo, BrazilHQ checked Sep 18, 2026	501-1,000	202 contacts →
	Indirect evidence “Com mais de 40 anos de experiência e mais de empreendimentos realizados no mercado nacional e internacional, a ICEC é uma empresa de ponta no fornecimento de mega estruturas…” Source: RevenueBase Database · checked Sep 18, 2026
5	Mazza Engenharia Ltda	Indirect evidence	Itabuna, BrazilHQ checked Sep 18, 2026	1,001-5,000	151 contacts →
	Indirect evidence “Mazza Engenharia Ltda is a company based out of Brazil.” Source: RevenueBase Database · checked Sep 18, 2026
6	LV Castro Engenharia E Inspecao Industrial	Indirect evidence	Lauro De Freitas, BrazilHQ checked Sep 18, 2026	n/a	137 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
7	Emtec Construções Metálicas	Indirect evidence	São Paulo, BrazilHQ checked Sep 18, 2026	201-500	116 contacts →
	Indirect evidence “A EMTEC foi fundada em novembro de e, desde então, a empresa se estruturou visando a expansão de suas atividades e hoje está plenamente capacitada para fornecer produtos e…” Source: RevenueBase Database · checked Sep 18, 2026
8	WSI South America	Partial evidence	Barueri, BrazilHQ checked Sep 18, 2026	501-1,000	115 contacts →
	Partial evidence “WSI has a 45+ year history as a global leader of specialty welding and automated welding technologies and techniques across the industrial and energy markets.” Source: RevenueBase Database · checked Sep 18, 2026
9	AJS Indústria E Serviços	Indirect evidence	Sapucaia Do Sul, BrazilHQ checked Sep 18, 2026	51-200	106 contacts →
	Indirect evidence “A AJS INDÚSTRIA E SERVIÇOS é uma empresa especializada em fabricação, montagem e manuteção indústrial, com sede em Sapucaia do Sul, região metropolitana de Porto Alegre.” Source: RevenueBase Database · checked Sep 18, 2026
10	OKJ Engenharia	Indirect evidence	Itaguaí, BrazilHQ checked Sep 18, 2026	51-200	102 contacts →
	Indirect evidence “A OKJ ENGENHARIA é uma empresa prestadora de serviços industriais, especializada em Caldeiraria, Construção Civil, Inspeção de Solda, Manutenção Eletromecânica, Pintura…” Source: RevenueBase Database · checked Sep 18, 2026
11	Htms Group	Indirect evidence	São José Dos Pinhais, BrazilHQ checked Sep 18, 2026	201-500	96 contacts →
	Indirect evidence “We are a qualified group focused on manufacturing and services of steel infrastructure for different segments.” Source: RevenueBase Database · checked Sep 18, 2026
12	FAM Construções Metálicas Pesadas	Indirect evidence	Jarinu, BrazilHQ checked Sep 18, 2026	201-500	88 contacts →
	Indirect evidence “FAM's mission is to ensure the satisfaction of our clients through efficient management and solutions in metal construction, using ethical, responsible, and qualified labor…” Source: RevenueBase Database · checked Sep 18, 2026
13	Perfiminas Indústria Metalúrgica Ltda	Indirect evidence	Juiz De Fora, BrazilHQ checked Sep 18, 2026	51-200	80 contacts →
	Indirect evidence “A Perfiminas Indústria Metalúrgica é uma indústria especializada na produção de peças em aço para a construção de estruturas metálicas, construção naval e de estruturas offshore…” Source: RevenueBase Database · checked Sep 18, 2026
14	Ciabrasil Engenharia	Indirect evidence	Vila Velha, BrazilHQ checked Sep 18, 2026	201-500	59 contacts →
	Indirect evidence “Atuamos desde em obras industriais multidisciplinares que envolvam escopo civil, metalmecânico e eletromecânico.” Source: RevenueBase Database · checked Sep 18, 2026
15	Delfiss Engenharia	Indirect evidence	Macaé, BrazilHQ checked Sep 18, 2026	51-200	49 contacts →
	Indirect evidence “Delfiss Engenharia is a civil engineering company based out of Avenida Otoniel Gomes Tavares 30, Macaé, Rio De Janeiro, Brazil.” Source: RevenueBase Database · checked Sep 18, 2026
16	Proserv Engenharia	Indirect evidence	Mogi-guacu, BrazilHQ checked Sep 18, 2026	51-200	40 contacts →
	Indirect evidence “Fundada em 1996, especializada em tubulações industriais e montagens eletromecânicas.” Source: RevenueBase Database · checked Sep 18, 2026
17	ABF Engenharia	Indirect evidence	São Luis, BrazilHQ checked Sep 18, 2026	51-200	36 contacts →
	Indirect evidence “Desde de 2004, sendo referência em fabricação e montagem de estruturas metálicas, manutenção e construção.” Source: RevenueBase Database · checked Sep 18, 2026
18	Conexão Montagens Técnicas	Indirect evidence	São Paulo, BrazilHQ checked Sep 18, 2026	51-200	31 contacts →
	Indirect evidence “A Conexão através de um processo que envolve conhecimento, eficiência e alto grau de profissionalismo, vem se consolidando no mercado há mais de 20 anos oferecendo, atendimento…” Source: RevenueBase Database · checked Sep 18, 2026
19	Cm4 Engenharia E Serviços	Indirect evidence	Jacobina, BrazilHQ checked Sep 18, 2026	51-200	31 contacts →
	Indirect evidence “Nós oferecemos a prestação de serviços especializados de Caldeiraria, Construção Civil, Montagem de Estruturas de Acessos, Tratamento de Superfície e Pintura Industrial…” Source: RevenueBase Database · checked Sep 18, 2026
20	Promosub Serviços Especializados Ltda	Indirect evidence	Macaé, BrazilHQ checked Sep 18, 2026	11-50	31 contacts →
	Indirect evidence “A Promosub nasceu em criada para atender às demandas dos setores de petróleo e gás por soldagens de alta confiabilidade.” Source: RevenueBase Database · checked Sep 18, 2026
21	Sukha Soluções EM Soldagem	Indirect evidence	Cachoeirinha, BrazilHQ checked Sep 18, 2026	11-50	30 contacts →
	Indirect evidence “Nossa cartela de produtos contempla soluções como- Projetos especiais de acordo com a necessidade do cliente- Automação de processos de solda e de montagem- Máquinas de Solda…” Source: RevenueBase Database · checked Sep 18, 2026
22	Caldefi Caldeiraria E Montagem Industrial	Indirect evidence	Santa Bárbara Doeste, BrazilHQ checked Sep 18, 2026	11-50	28 contacts →
	Indirect evidence “Somos uma empresa especializada em manutenção, caldeiraria e montagens industriais.” Source: RevenueBase Database · checked Sep 18, 2026
23	Artmetal Industria E Comércio	Indirect evidence	Barueri, BrazilHQ checked Sep 18, 2026	51-200	25 contacts →
	Indirect evidence “Localizada em Barueri/ SP, a ArtMetal é uma empresa especializada na execução de serviços de corte, dobra, solda, de materiais em Aço Carbono, Alumínio, Aço Inox, Latão, Cobre e…” Source: RevenueBase Database · checked Sep 18, 2026
24	Metalúrgica Rolim Ltda	Indirect evidence	Gravataí, BrazilHQ checked Sep 18, 2026	11-50	21 contacts →
	Indirect evidence “A METALURGICA ROLIM LTDA atua no mercado, oferecendo soluções em beneficiamento de aços carbono e aço inoxidável, com ampla infra-estrutura para atender com qualidade e rapidez às…” Source: RevenueBase Database · checked Sep 18, 2026
25	Proinsp Engenharia	Indirect evidence	Rio Das Ostras, BrazilHQ checked Sep 18, 2026	51-200	21 contacts →
	Indirect evidence “A PROINSP ENGENHARIA é especialista em serviços industriais para o setor de óleo, gás, energia e obras civis, com 25 anos de experiência.” 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: specialized welding 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 specialized welding contractors.
Partial evidence: Its own public description names part of specialized welding contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name specialized welding 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 508 specialized welding contractors based in Brazil

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Specialized welding contractors based in Brazil at a glance

As of Sep 18, 2026

6.4%Verified-email coverage

13.6Average contacts per company

11-50Median size (employees)

6.5%Largest-city concentration · Sao Paulo

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

192

11-50

205

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 508 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 specialized welding 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 Brazil whose own description of what they do matches “specialized welding 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 specialized welding 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 specialized welding contractors, and records with no verified work email. Companies headquartered outside Brazil 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, 443 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.

Specialized welding contractors by metro

Specialized welding contractors in Sao Paulo33

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 specialized welding 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 specialized welding contractors are there based in Brazil?

RevenueBase identified 508 specialized welding contractors headquartered in Brazil 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?

Alfa Engenharia E Montagens Industriais, headquartered in Itauna, tops this list with the largest team on record.

Which city has the most specialized welding contractors?

Sao Paulo leads with 33 headquartered companies, followed by Campinas (9) and Curitiba (9).

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 443 verified decision-maker contacts tracked across these 508 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.