Company lists · Data refreshed November 2026

Top 25 Well inspection and testing companies worldwide

RevenueBase identified 2,063 company matches for well inspection and testing companies worldwide as of November 2026 and tracks 23,268 professional contacts across them, including 4,632 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for well inspection and testing companies 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 6, 2026. Country and city lists for well inspection and testing companies 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 6, 2026 How this list was built
2,063Companies
23,268Contacts tracked
4,632Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest well inspection and testing companies worldwide

Ranked by team size
Top 25 of 2,063 company matches for well inspection and testing companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchMarietta, GA, United StatesHQ recorded Nov 6, 20261,001-5,000961 contacts →

Exact match

“Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBergen, NorwayHQ recorded Nov 6, 20265,001-10,000656 contacts →

Exact match

“Oceaneering Asset Integrity is one of the largest providers of Integrity and Inspection Services in the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026501-1,000384 contacts →

Exact match

“Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMumbai, IndiaHQ recorded Nov 6, 2026501-1,000379 contacts →

Exact match

“We provide Third-Party Inspection, Conventional & Advanced Non-Destructive Testing (NDT) and Heat Treatment Services in Oil & Gas Sector, Flow Lines, Heavy Engineering, Onshore…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchJebal Ali, United Arab EmiratesHQ recorded Nov 6, 2026201-500279 contacts →

Exact match

“Established in in Dubai, Geo-Chem Middle East is today recognised as one of the premier inspection and testing companies in the region.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchAlkhobar, Saudi ArabiaHQ recorded Nov 6, 20261,001-5,000262 contacts →

Exact match

“Established in 2008, Axis Inspection Contracting JSC.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchOklahoma City, TX, United StatesHQ recorded Nov 6, 2026201-500259 contacts →

Exact match

“Setting the Standard for Premier Inspection Services in the Oil & Gas Industry through our Dedication to Tradition / Talent / Technology / Teamwork TJ Inspection provides the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAlpharetta, CA, United StatesHQ recorded Nov 6, 2026501-1,000231 contacts →

Exact match

“Industrial Inspection & Analysis® (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLeague City, TX, United StatesHQ recorded Nov 6, 2026201-500200 contacts →

Exact match

“PK Technical & Inspection is an advanced non-destructive testing and inspection company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLong Beach, CA, United StatesHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“Twining has continued to expand and evolve since its inception more than a century ago.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPoint Lisas Industrial Estate, Trinidad and TobagoHQ recorded Nov 6, 2026201-500188 contacts →

Exact match

“Technical Integrated Services (formerly Trinidad Inspection Services) is the backbone of industries powering the Caribbean.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLongview, KS, United StatesHQ recorded Nov 6, 2026201-500183 contacts →

Exact match

“XCEL is an industrial inspection company with a unique blend of services focused on your compliance needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPasadena, TX, United StatesHQ recorded Nov 6, 2026501-1,000179 contacts →

Exact match

“The TechCorr name is synonymous with safe, quality inspection services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 2026201-500165 contacts →

Exact match

“Smith-Emery has been providing inspection and materials testing services for public agencies and private companies for the past 113 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchVinhedo, BrazilHQ recorded Nov 6, 202651-200165 contacts →

Exact match

“Oferecemos soluções em inspeção e ensaios não destrutivos convencionais e não convencionais, e serviços metalúrgicos laboratoriais.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDeer Park, TX, United StatesHQ recorded Nov 6, 20261,001-5,000164 contacts →

Exact match

“QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500164 contacts →

Exact match

“About Us Cutting-edge technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchEdmonton, TX, CanadaHQ recorded Nov 6, 2026201-500151 contacts →

Exact match

“Metalogic Inspection Services delivers professional inspection services that support asset integrity, safety, and operational confidence across North America.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAustin, TX, United StatesHQ recorded Nov 6, 2026501-1,000136 contacts →

Exact match

“Welcome to On & Offshore Quality Control Specialists, LLC.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSaint Rose, TX, United StatesHQ recorded Nov 6, 2026201-500133 contacts →

Exact match

“Since 1978, Coastal Gulf & International, Inc.(CGI) has been a trusted leader in independent inspection, testing, and technical services for the energy, petrochemical, and marine…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchParma, MO, United StatesHQ recorded Nov 6, 2026201-500131 contacts →

Exact match

“JANX is a leader in nondestructive testing and inspection solutions with offices throughout the USA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBatam, IndonesiaHQ recorded Nov 6, 2026201-500127 contacts →

Exact match

“Established in 2009, PT CAST Laboratories Indonesia is a leading independent testing and quality center, providing inspection and engineering services, certification to the oil &…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchQuébec, ON, CanadaHQ recorded Nov 6, 202651-200123 contacts →

Exact match

“Nucleom is a leading Canadian company offering customized inspection solutions for various industries, including nuclear, petrochemical, pipeline, mining and more.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchFort Worth, TX, United StatesHQ recorded Nov 6, 2026201-500115 contacts →

Exact match

“3B Inspection was founded in 2016 to provide dependable, high-quality inspection services for the oil and gas pipeline industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202651-200113 contacts →

Exact match

“Onstream Pipeline Inspection, member of MISTRAS Group (NYSE: MG), uses advanced technologies to provide reliable and accurate pipeline inspection results to oil & gas producers…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 2,063 well inspection and testing companies worldwide

See the full list, filter by size, metro and specialty, and access 4,632 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Well inspection and testing companies worldwide at a glance

As of Nov 6, 2026
19.9%Verified-email coverage
11.3Average contacts per company
1-10Median size (employees)
1.9%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,078
11-50
619
51-200
227
201-500
88
501-1,000
16
1,001-5,000
11
5,001-10,000
2
10001+
2

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 well inspection and testing companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “well inspection and testing companies” 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 4,632 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 6, 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.

Well inspection and testing companies by location

7 lists · largest first

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

Countries

Cities

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 “well inspection and testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many well inspection and testing companies are there worldwide?

RevenueBase identified 2,063 company matches for well inspection and testing companies 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?

Applied Technical Services, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most well inspection and testing companies?

The United States leads with 749 companies, followed by Canada (112) and Brazil (89). Every well inspection and testing companies list by country and city is linked on this page.

Which city has the most well inspection and testing companies?

Houston leads with 39 company records, followed by Cairo (15) and Dubai (15).

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 4,632 professional contacts with verified work emails tracked across these 2,063 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 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,063 well inspection and testing companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.