Company lists · Data refreshed November 2026

Top 25 Liquid penetrant testing services based in the United States

RevenueBase identified 89 company matches for liquid penetrant testing services associated with the United States as of November 2026 and tracks 717 professional contacts across them, including 190 with verified work emails. Houston is the largest hub.

This list covers company matches for liquid penetrant testing services associated with the United States, 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.

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
89Companies
717Contacts tracked
190Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest liquid penetrant testing services based in the United States

Ranked by team size
Top 25 of 89 company matches for liquid penetrant testing services based in the United States, 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 matchScott, LA, United StatesHQ recorded Nov 6, 2026201-50097 contacts →

Exact match

“About: National Inspection Services is a full service Nondestructive Testing (NDT) company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHouston, OK, United StatesHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Turnco provides Non-Destructive Testing to the Oil and Gas Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchEnfield, CT, United StatesHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMiddleburg Heights, OH, United StatesHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Nondestructive testing is one of the key tools used to confirm the quality of aerospace and aircraft components.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGreeley, LA, United StatesHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“TRISPEC, LLC is an NDT company based out of Greeley, CO specializing in Ultrasonics and conventional inspection methods.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSanger, TX, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLafayette, LA, United StatesHQ recorded Nov 6, 20261-1017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202651-20017 contacts →

Exact match

“Since being founded in 1964, Bonded Inspections has become one of the leading Non Destructive Testing Companies in Texas and Oklahoma.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBenbrook, TX, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“NDE Labs is an aviation & aerospace NDT company based out of Benbrook, Texas, United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSugar Grove Township, PA, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Perform basic and advanced NDT services including but not limited to Ultrasonic (UT), Visual (VT), Liquid Penetrant (PT), Magnetic Particle(MT), Radiography (RT),Phased Array…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Material Inspection Technology (MIT, Inc.) is a Houston-based provider of Non-Destructive Testing (NDT), fabrication quality assurance, and third-party inspection services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBelle Chasse, LA, United StatesHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“IQS Inspection,LLC has over 40 plus years of professional NDT and Inspection Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchOdessa, TX, United StatesHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Vanta NDT is a team of highly trained quality and customer service specialists, that performs NDT inspections.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRolling Meadows, IL, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Radiography -Computerized (CR) & Conventional Magnetic Particle Dye Penetrant Ultrasonic Inspection Visual Inspection / CWI Positive Material Identification (PMI) Carbon…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMorgan City, LA, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Precision NDT & Consulting LLC is a turn key NDT service provider based out of the gulf coast region.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSan Antonio, TX, United StatesHQ recorded Nov 6, 20261-109 contacts →

Exact match

“BRL NDT SERVICES is a full service Non-Destructive Testing company, providing Professional Advanced Non-Destructive Testing Services, and committed to the highest standards of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBlack Eagle, MT, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Loenbro Inspection is a NDT inspection company based out of Great Falls, Montana with field offices in Casper, Wyoming, Billings, Montana, Epping, North Dakota, and Westminster…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSouth Gate, KY, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Sherwin Inc is a chemical manufacturing company, specializing in Penetrant and Magnetic Particle products for the NDT Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchEdgewood, MD, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBeaumont, TX, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchTorrance, CA, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Founded in 1958, we at Hadd-Co have built a nation-wide reputation of providing leading quality NDT inspection services specializing in Magnetic Particle Inspection and Liquid…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchKentwood, MI, United StatesHQ recorded Nov 6, 20261-107 contacts →

Exact match

“The Non-Destructive Testing Group offers a complete range of inspection services, both in the field and in the laboratory.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMiami, FL, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Aerospace Maintenance Supplies and Services (AMS Inc.) is an FAA/EASA certificated Part 145 Repair Station located in Medley, FL.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchDanvers, MA, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Baron NDT is equipped with the expertise and cutting-edge technology to handle a wide array of non-destructive testing needs - from simple Magnetic Particle Inspections to…”

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

Showing 25 of 89 liquid penetrant testing services based in the United States

See the full list, filter by size, metro and specialty, and access 190 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Liquid penetrant testing services based in the United States at a glance

As of Nov 6, 2026
26.5%Verified-email coverage
8.1Average contacts per company
11-50Median size (employees)
9.0%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
34
11-50
39
51-200
12
201-500
3

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 89 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “liquid penetrant 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 190 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.

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 “liquid penetrant testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many liquid penetrant testing services are there based in the United States?

RevenueBase identified 89 company matches for liquid penetrant testing services associated with the United States 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?

National Inspection Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most liquid penetrant testing services?

Houston leads with 8 company records, followed by Broussard (5) and Baton Rouge (2).

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 190 professional contacts with verified work emails tracked across these 89 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 89 liquid penetrant testing services based in the United States. 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.