Company lists · Data refreshed November 2026

Top 25 Welder certification testing services worldwide

RevenueBase identified 808 company matches for welder certification testing services worldwide as of November 2026 and tracks 5,290 professional contacts across them, including 990 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for welder certification testing services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 3, 2026. Country and city lists for welder certification testing services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 3, 2026 How this list was built
808Companies
5,290Contacts tracked
990Verified emails
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The 25 largest welder certification testing services worldwide

Ranked by team size
Top 25 of 808 company matches for welder certification testing services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMilton, ON, CanadaHQ recorded Nov 3, 202651-200278 contacts →

Exact match

“The CWB Group is an industry supported private sector organization providing welding certification, management systems registration and training services to over 7600 companies in…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchGenova (ge), ItalyHQ recorded Nov 3, 2026201-500195 contacts →

Exact match

“Fanno parte di IIS l’Istituto Italiano della Saldatura - Ente Morale, con personalità giuridica di associazione senza scopo di lucro, e le controllate IIS CERT srl e IIS SERVICE…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3Exact matchMascouche, QC, CanadaHQ recorded Nov 3, 202651-200103 contacts →

Exact match

“Laboratoire d’essai Mequaltech une compagnie spécialisée dans des services reliés au secteur de la métallurgie et du soudage dans le domaine des essais destructifs et non…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchElk Grove Village, IL, United StatesHQ recorded Nov 3, 2026201-50084 contacts →

Exact match

“MIL provides the following services to the Aerospace, Medical, Industrial and Power Generation industries: • Non-destructive testing including Fluorescent Penetrant, Magnetic…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-5060 contacts →

Exact match

“Based in Houston, Texas, Acute Technological Services (ATS) provides welding engineering and welding services worldwide.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6Exact matchCanoas, BrazilHQ recorded Nov 3, 202651-20058 contacts →

Exact match

“A END Oliveira atua no mercado de- Engenharia e Inspeção de Equipamentos- Ensaios Não Destrutivos em Equipamentos e Unidades Industriais- Diligenciamento e Fiscalização-…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchSurabaya, IndonesiaHQ recorded Nov 3, 202611-5056 contacts →

Exact match

“Kampuh Welding Indonesia adalah lembaga pelatihan pengelasan terbaik dan terbesar di Indonesia dan Asia Tenggara yang berbasis di Surabaya dan sudah bersertifikat ISO 9001:2015.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8Exact matchLumberton, TX, United StatesHQ recorded Nov 3, 202651-20055 contacts →

Exact match

“Weld Spec is locally-owned and operated and was established in 2001 with the goal of providing superior non-destructive testing and inspection services to our clients with…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchDuisburg, GermanyHQ recorded Nov 3, 202651-20047 contacts →

Exact match

“Die GSI (Gesellschaft für Schweißtechnik International) ist die vom DVS gegründete gemeinnützige GmbH für Aus- und Weiterbildung, Zertifizierung, Qualifizierung und Beratung im…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchDuisburg, GermanyHQ recorded Nov 3, 2026201-50045 contacts →

Exact match

“The GSI-Gesellschaft für Schweißtechnik International mbH (GSI mbH) was founded by the DVS - Deutscher Verband für Schweißen und verwandte Verfahren e.V.(German Welding Society)…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11Exact matchSan Fernando, SpainHQ recorded Nov 3, 202611-5044 contacts →

Exact match

“Quality Weld Service is a company specialized in quality control services, inspection, and Non-Destructive Testing (NDT).”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchMunkebo, DenmarkHQ recorded Nov 3, 202611-5040 contacts →

Exact match

“3WIS is founded on strong competencies within welding and steel structures while being specialized in traditional NDT inspections, advanced NDT and QA/QC services within the wind…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13Exact matchCanoas, BrazilHQ recorded Nov 3, 202651-20038 contacts →

Exact match

“A CAPAZ INSPEÇÕES Ltda, atua como empresa prestadora de serviços, na área de controle e garantia da qualidade, através de inspeções, qualificações e certificações de soldagens…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14Exact match_, United KingdomHQ recorded Nov 3, 202611-5036 contacts →

Exact match

“Quality and Excellence in regards to speed of results and documentation is the foundation of our service provision.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15Exact matchBasel, SwitzerlandHQ recorded Nov 3, 202651-20035 contacts →

Exact match

“Kompetenz in Füge, Trenn- und Prüftechniken Der Schweizerische Verein für Schweisstechnik (SVS) ist das führende Kompetenzzentrum für Schweisstechnik in der Schweiz.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16Exact matchTipton, United KingdomHQ recorded Nov 3, 202611-5032 contacts →

Exact match

“WQ Inspection & Certification Ltd are a UKAS accredited Inspection Body, Certification Body and Testing Laboratory, Number 9430.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchWoodlands, SingaporeHQ recorded Nov 3, 202611-5032 contacts →

Exact match

“ANSA TIC Veritas Pte Ltd is an independent TPIA body, Inspection agency & testing laboratory providing Non destructive testing, Mechanical test & Welding Inspections to various…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18Exact matchBenton, NC, United StatesHQ recorded Nov 3, 202611-5031 contacts →

Exact match

“Applied Inspection Systems (AIS) is a non-destructive testing (NDT) service company of over thirty years, specializing in examinations for power generation, pipeline, chemical…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19Exact matchTempe, AZ, United StatesHQ recorded Nov 3, 202651-20030 contacts →

Exact match

“At PNL our brand is 'Quality When You Need It.' Phoenix National Laboratories is a full-service engineering and ISO accredited 3rd Party Quality Testing company specializing in…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20Exact matchVojens, DenmarkHQ recorded Nov 3, 202611-5028 contacts →

Exact match

“Pioneering Excellence in NDT & Welding Solutions – Mose Technology NDT & Welding, ApS** Embark on a journey of unparalleled quality and reliability with Mose Technology NDT &…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21Exact matchBelgrade, SerbiaHQ recorded Nov 3, 202651-20023 contacts →

Exact match

“Zavod za zavarivanje je: • Kontrolno telo akreditovano prema SRPS ISO/IEC 17020:2012 (Sertifikat o akreditaciji br.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22Exact matchCádiz, SpainHQ recorded Nov 3, 202611-5023 contacts →

Exact match

“TECNOFOR SUR, S.L, es una empresa consolidada, con una dilatada experiencia en Formación y centro de soldadura certificada, nacida en 2002, especializada en prestación de…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23Exact matchEdmontion, AB, CanadaHQ recorded Nov 3, 202611-5021 contacts →

Exact match

“Your Success is Our Goal Does your product or service involve welding?”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24Exact matchUnited StatesHQ recorded Nov 3, 202611-5021 contacts →

Exact match

“A WBE-certified nondestructive testing and weld inspection company centrally located in Illinois.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25Exact matchDenver, CO, United StatesHQ recorded Nov 3, 202611-5020 contacts →

Exact match

“Our business is dedicated to completing the job through final inspection in the scope of our services.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 25 of 808 welder certification testing services worldwide

See the full list, filter by size, metro and specialty, and access 990 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Welder certification testing services worldwide at a glance

As of Nov 3, 2026
18.7%Verified-email coverage
6.5Average contacts per company
1-10Median size (employees)
0.7%Largest-city concentration · Houston
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
500
11-50
234
51-200
40
201-500
14
501-1,000
2
1,001-5,000
1
10001+
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for welder certification testing services are linked below.
What qualifies
Company records worldwide whose business descriptions match “welder certification testing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 990 professional contacts with verified work emails across the full matched dataset. 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 November 3, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Welder certification testing services by location

6 lists · largest first

Every Welder certification testing services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “welder certification testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many welder certification testing services are there worldwide?

RevenueBase identified 808 company matches for welder certification testing services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CWB Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most welder certification testing services?

The United States leads with 137 companies, followed by Canada (46) and the United Kingdom (43). Every welder certification testing services list by country and city is linked on this page.

Which city has the most welder certification testing services?

Houston leads with 6 company records, followed by Istanbul (6) and Pune (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 990 professional contacts with verified work emails tracked across these 808 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 3, 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 SmartSearch, 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.