Company lists · Data refreshed September 2026
Top 25 Magnetic testing services based in the United States
RevenueBase identified 228 magnetic testing services headquartered in the United States as of September 2026 and tracks 3,126 professional contacts across them, including 850 with verified work emails. Houston is the largest hub.
This list covers magnetic testing services headquartered in the United States, 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.
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.
The 25 largest magnetic testing services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 151 contacts → | ||||
Indirect evidence “About Us Cutting-edge technologies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 146 contacts → | ||||
Partial evidence “ZETEC is a global leader in nondestructive testing (NDT) solutions for the critical inspection needs of industries the world counts on, including - Power Generation - Oil and Gas…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 143 contacts → | ||||
Partial evidence “JANX is a leader in nondestructive testing and inspection solutions with offices throughout the USA.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 125 contacts → | ||||
Indirect evidence “CAN USA provides NDT inspection, on-line maintenance and repair while maintaining an unsurpassed safety record.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 115 contacts → | ||||
Partial evidence “Magnaflux is a global leader in nondestructive testing solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 96 contacts → | ||||
Strong evidence “Magnetic Analysis Corporation has over 95 years of experience as a leader in non-destructive testing.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 89 contacts → | ||||
Indirect evidence “Superior Integrity Services is a national leader in non-destructive and integrity services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 88 contacts → | ||||
Partial evidence “About: National Inspection Services is a full service Nondestructive Testing (NDT) company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 87 contacts → | ||||
Indirect evidence “Nondestructive Examination (NDE) and QA/QC Inspection Services for the power generation, aerospace, aircraft, bridge and building, fabrication, manufacturing, chemical, food…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 81 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 66 contacts → | ||||
Strong evidence “Magnetech is an ISO-quality provider of electrical-mechanical industrial services, including testing, repair, rewind and refurbishment of ac/dc motors and generators…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 65 contacts → | ||||
Partial evidence “Turnco provides Non-Destructive Testing to the Oil and Gas Industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 64 contacts → | ||||
Strong evidence “MIL provides the following services to the Aerospace, Medical, Industrial and Power Generation industries: • Non-destructive testing including Fluorescent Penetrant, Magnetic…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 56 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 55 contacts → | ||||
Partial evidence “Voltech provides innovative, reliable test equipment for the Power Electronics Industry, specializing in wound component and transformer testing.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 49 contacts → | ||||
Partial evidence “PTI was founded over thirty five years ago as a provider of non-destructive testing services to machine shops serving the aerospace, power generation, and medical industries.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 37 contacts → | ||||
Partial evidence “Established in the year 2005, ZChem Specialities came a long way to become a full Range NDT company in the areas of Liquid Penetrant Inspection (LPI) and Magnetic Particle…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 35 contacts → | ||||
Partial evidence “The talented Field engineers at HIVOLT Advanced provide electrical testing and commissioning services in a safe and reliable manner.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 34 contacts → | ||||
Partial evidence “The Snell Group’s mission is to help you leverage Infrared Thermography (IR) and Electric Motor Testing (EMT) whether your interest is condition monitoring, building applications…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 29 contacts → | ||||
Partial evidence “Our name reflects the range of our capabilities in the field of nondestructive testing including x-ray, ultrasonic, and eddy current methods.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 28 contacts → | ||||
Indirect evidence “MAC NDT was started by an ASNT level with significant oilfield experience.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 26 contacts → | ||||
Partial evidence “Established in 1939, we are one of the oldest and most experienced metallurgical testing laboratories in the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 26 contacts → | ||||
Indirect evidence “International Inspection, Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 24 contacts → | ||||
Indirect evidence “Alamo Oilfield Services, LLC was established in 2013 specializing in anchor tie-down on the completion side of the the oil and gas industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 23 contacts → | ||||
Indirect evidence “Virtus Imaging Partners is a South Florida based MRI coil and parts repair company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: magnetic testing services. 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 magnetic testing services.
- Partial evidence
- Its own public description names part of magnetic testing services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name magnetic testing services. 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 228 magnetic testing services based in the United States
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Magnetic testing services based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 228 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 magnetic testing services, 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 the United States whose own description of what they do matches “magnetic testing services”. 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 magnetic testing services), 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 magnetic testing services, and records with no verified work email. Companies headquartered outside United States 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, 850 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.
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 magnetic testing services, 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 magnetic testing services are there based in the United States?
RevenueBase identified 228 magnetic testing services headquartered in the United States 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?
Verispex, headquartered in Houston, tops this list with the largest team on record.
Which city has the most magnetic testing services?
Houston leads with 21 headquartered companies, followed by Broussard (5) and Atlanta (3).
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 850 verified decision-maker contacts tracked across these 228 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.
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