Company lists · Data refreshed September 2026

Top 25 Non-destructive testing companies worldwide

Name: Non-destructive testing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 3,416 companies tracked

RevenueBase identified 3,416 non-destructive testing companies worldwide as of September 2026 and tracks 47,597 professional contacts across them, including 10,287 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers non-destructive testing companies worldwide, 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 20, 2026. Country and city lists for non-destructive testing companies follow the table.

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 20, 2026 86% judged on-target in blind review

3,416Companies

47,597Contacts tracked

10,287Verified emails

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The 25 largest non-destructive testing companies worldwide

Ranked by team size

Top 25 of 3,416 non-destructive testing companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to non-destructive testing 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	Applus OIL And GAS	Indirect evidence	Madrid, United KingdomHQ checked Sep 20, 2026	10001+	1,463 contacts →
	Indirect evidence “Applus+ is globally recognized across all phases of the oil and gas industry, including upstream, midstream, and downstream, both on land and at sea.” Source: RevenueBase Database · checked Sep 20, 2026
2	Badger Infrastructure Solutions	Strong evidence	CanadaHQ checked Sep 20, 2026	1,001-5,000	1,441 contacts →
	Strong evidence “Badger is the largest provider of non-destructive excavating and related services in North America.” Source: RevenueBase Database · checked Sep 20, 2026
3	Irisndt	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 20, 2026	10001+	1,212 contacts →
	Indirect evidence “One of the largest independent Asset Integrity companies.” Source: RevenueBase Database · checked Sep 20, 2026
4	Applied Technical Services, LLC	Partial evidence	Marietta, GA, United StatesHQ checked Sep 20, 2026	1,001-5,000	890 contacts →
	Partial evidence “Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Source: RevenueBase Database · checked Sep 20, 2026
5	Tulsa Inspection Resources, LLC	Strong evidence	Tulsa, OK, United StatesHQ checked Sep 20, 2026	1,001-5,000	770 contacts →
	Strong evidence “Core capabilities include: Inspection Services (Chief, CWI, NACE/AMPP, Utility, Environmental, Safety, Poly, etc), Non-Destructive Examination (Ultrasonic Testing (UT), Phased…” Source: RevenueBase Database · checked Sep 20, 2026
6	Oceaneering Asset Integrity	Indirect evidence	Bergen, NorwayHQ checked Sep 20, 2026	5,001-10,000	680 contacts →
	Indirect evidence “Oceaneering Asset Integrity is one of the largest providers of Integrity and Inspection Services in the world.” Source: RevenueBase Database · checked Sep 20, 2026
7	PT Radiant Utama Interinsco TBK	Strong evidence	Jakarta Selatan, IndonesiaHQ checked Sep 20, 2026	501-1,000	645 contacts →
	Strong evidence “Starting from an Inspection Department of one of the pioneering companies of the Radiant Group’s businesses with specialization in the field of Non Destructive Testing (NDT) back…” Source: RevenueBase Database · checked Sep 20, 2026
8	Eddyfi Technologies	Strong evidence	Québec, QC, CanadaHQ checked Sep 20, 2026	1,001-5,000	490 contacts →
	Strong evidence “Headquartered in beautiful Québec, Canada, Eddyfi Technologies provides the highest performance Non-Destructive Testing (NDT) inspection technologies and robotic solutions in the…” Source: RevenueBase Database · checked Sep 20, 2026
9	Ndtccs	Indirect evidence	Saudi ArabiaHQ checked Sep 20, 2026	501-1,000	423 contacts →
	Indirect evidence “NDT Corrosion Control Services Co.(NDTCCS) was established in 1975, with Head Office in Dammam, Kingdom of Saudi Arabia with branches in other GCC countries, UAE, Qatar, Kuwait…” Source: RevenueBase Database · checked Sep 20, 2026
10	Waygate Technologies	Strong evidence	Hürth, GermanyHQ checked Sep 20, 2026	1,001-5,000	388 contacts →
	Strong evidence “Waygate Technologies, a Baker Hughes business, is an industrial inspection solutions company and the world leader in non-destructive testing (NDT).” Source: RevenueBase Database · checked Sep 20, 2026
11	Ixar Industrial X-Ray & Allied Radiographers I Pvt. LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 20, 2026	501-1,000	359 contacts →
	Strong evidence “We provide Third-Party Inspection, Conventional & Advanced Non-Destructive Testing (NDT) and Heat Treatment Services in Oil & Gas Sector, Flow Lines, Heavy Engineering, Onshore…” Source: RevenueBase Database · checked Sep 20, 2026
12	Versa Integrity Group, INC	Indirect evidence	Tomball, TX, United StatesHQ checked Sep 20, 2026	5,001-10,000	356 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
13	Nvi, LLC Nondestructive Visual Inspection	Indirect evidence	Gray, LA, United StatesHQ checked Sep 20, 2026	201-500	340 contacts →
	Indirect evidence “NVI is a provider of industrial NDT solutions catering to companies with critical infrastructure needs.” Source: RevenueBase Database · checked Sep 20, 2026
14	Structural Integrity Associates	Indirect evidence	Huntersville, NC, United StatesHQ checked Sep 20, 2026	201-500	274 contacts →
	Indirect evidence “Structural Integrity Associates is the most-trusted provider of proven engineering services for the energy and process industries.” Source: RevenueBase Database · checked Sep 20, 2026
15	Axis Inspection Contracting JSC	Indirect evidence	Alkhobar, Saudi ArabiaHQ checked Sep 20, 2026	1,001-5,000	255 contacts →
	Indirect evidence “Established in 2008, Axis Inspection Contracting JSC.” Source: RevenueBase Database · checked Sep 20, 2026
16	Techcorr Usa, LLC	Indirect evidence	Pasadena, TX, United StatesHQ checked Sep 20, 2026	501-1,000	226 contacts →
	Indirect evidence “The TechCorr name is synonymous with safe, quality inspection services.” Source: RevenueBase Database · checked Sep 20, 2026
17	Pro-Surve Technical Services	Strong evidence	League City, TX, United StatesHQ checked Sep 20, 2026	201-500	213 contacts →
	Strong evidence “Pro-Surve Technical Services is an advanced non-destructive testing and inspection company.” Source: RevenueBase Database · checked Sep 20, 2026
18	Sonomatic Limited	Strong evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	201-500	207 contacts →
	Strong evidence “Sonomatic is a worldwide organisation that specialises in the design, development, and application of Non-Destructive Testing (NDT) inspections.” Source: RevenueBase Database · checked Sep 20, 2026
19	Pioneering Line Of Technical Services - Oman	Indirect evidence	Muscat, OmanHQ checked Sep 20, 2026	51-200	197 contacts →
	Indirect evidence “SIEVERT INDIA was established in the year 1986 with a view to give quality and prompt services in the field of NDT.” Source: RevenueBase Database · checked Sep 20, 2026
20	Twining, INC	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 20, 2026	201-500	178 contacts →
	Indirect evidence “Twining has continued to expand and evolve since its inception more than a century ago.” Source: RevenueBase Database · checked Sep 20, 2026
21	XCEL	Indirect evidence	Longview, TX, United StatesHQ checked Sep 20, 2026	201-500	170 contacts →
	Indirect evidence “XCEL is an industrial inspection company with a unique blend of services focused on your compliance needs.” Source: RevenueBase Database · checked Sep 20, 2026
22	UT Quality	Strong evidence	Katy, TX, United StatesHQ checked Sep 20, 2026	201-500	163 contacts →
	Strong evidence “UTQuality is a global industrial engineering company specializing in groundbreaking non-destructive testing services.” Source: RevenueBase Database · checked Sep 20, 2026
23	Metalogic Inspection Services	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 20, 2026	201-500	156 contacts →
	Indirect evidence “Metalogic Inspection Services delivers professional inspection services that support asset integrity, safety, and operational confidence across North America.” Source: RevenueBase Database · checked Sep 20, 2026
24	Vibrant NDT Services PVT LTD Official	Strong evidence	Chennai, IndiaHQ checked Sep 20, 2026	201-500	155 contacts →
	Strong evidence “Vibrant NDT Services is an adaptable NDT service provider, Leader in NDT with ISO 9001:2008 & ISO EIC 17025 certification, capable of addressing a variety of Non-Destructive…” Source: RevenueBase Database · checked Sep 20, 2026
25	Verispex	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	151 contacts →
	Indirect evidence “About Us Cutting-edge technologies.” Source: RevenueBase Database · checked Sep 20, 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: non-destructive testing 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 non-destructive testing companies.
Partial evidence: Its own public description names part of non-destructive testing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name non-destructive testing 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 3,416 non-destructive testing companies worldwide

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Non-destructive testing companies worldwide at a glance

As of Sep 20, 2026

21.6%Verified-email coverage

13.9Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

1,480

11-50

1,275

51-200

483

201-500

117

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 non-destructive testing 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.
Coverage: Every country. Country and city lists for non-destructive testing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “non-destructive testing 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 non-destructive testing 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 non-destructive testing companies, and records with no verified work email.
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, 10,287 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 20, 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.

Non-destructive testing companies by location

15 lists · largest first

Every Non-destructive testing companies 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 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 non-destructive testing 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 non-destructive testing companies are there worldwide?

RevenueBase identified 3,416 non-destructive testing companies worldwide 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?

Applus OIL And GAS, headquartered in Madrid, tops this list with the largest team on record.

Which country has the most non-destructive testing companies?

The United States leads with 581 companies, followed by India (345) and the United Kingdom (195). Every non-destructive testing companies list by country and city is linked on this page.

Which city has the most non-destructive testing companies?

Houston leads with 47 headquartered companies, followed by Chennai (37) and Mumbai (37).

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 10,287 verified decision-maker contacts tracked across these 3,416 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 20, 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.