Company lists · Data refreshed November 2026
Top 25 Welder certification testing services based in the United States
RevenueBase identified 137 company matches for welder certification testing services associated with the United States as of November 2026 and tracks 992 professional contacts across them, including 273 with verified work emails. Houston is the largest hub.
This list covers company matches for welder certification 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 3, 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.
The 25 largest welder certification testing services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 84 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 | |||||
| 2 | 60 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 | |||||
| 3 | 55 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 | |||||
| 4 | 31 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 | |||||
| 5 | 30 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 | |||||
| 6 | 20 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 | |||||
| 7 | 19 contacts → | ||||
Exact match “United Technical is a leading-edge, full-service testing facility providing metallurgical examination, destructive/nondestructive testing, and technical consulting services.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 8 | 18 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 9 | 17 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 3, 2026 · View company records in RevenueBase | |||||
| 10 | 15 contacts → | ||||
Exact match “QC Laboratories Inc.(QC Labs) is an industrial/commercial Nondestructive Testing Laboratory (NDT) incorporated in the State of Florida in 1965.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 11 | 15 contacts → | ||||
Exact match “Elite Welding Academy is an Accredited Test Facility (ATF) that performs weld tests as well as accredited education center that teaches welding in Cincinnati, OH, and South Point…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 12 | 14 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 3, 2026 · View company records in RevenueBase | |||||
| 13 | 13 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 14 | 13 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 15 | 12 contacts → | ||||
Exact match “The company was founded in 2006 providing CWI services and quickly grew to provide much needed quality inspection services to the construction industry.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 16 | 11 contacts → | ||||
Exact match “API maintains WPS on carbon, stainless, nickel alloys - such as Inconel and all power piping chrome such as P91.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 17 | 10 contacts → | ||||
Exact match “WH Labs (Whitehouse Laboratories) is an ISO 9001:2015, ISO/IEC 17025:2017, and AWS Accredited independent testing and analysis laboratory based in Houston, Texas, with ASME U&R…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 18 | 10 contacts → | ||||
Exact match “Partek Laboratories Inc has the largest and most technologically advanced metallurgical testing labs and welder certification facilities along the Gulf Coast.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 19 | 10 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 20 | 8 contacts → | ||||
Exact match “If you're looking to prepare for an API certification exam, then Atlas Training Online is the most affordable and effective way.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 21 | 8 contacts → | ||||
Exact match “A Gas & Oilfield Specialty Service Company “R” Stamp code certified Welding: In Service - API - ASME Certified Stainless & Carbon Civil Work Painting & Coating Excavation” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 22 | 7 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 3, 2026 · View company records in RevenueBase | |||||
| 23 | 7 contacts → | ||||
Exact match “Kidder Incorporated offers complete welding services including; contract welding, production welding, and manual welding.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 24 | 5 contacts → | ||||
Exact match “Non-destructive testing and flow iron certification.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 25 | 5 contacts → | ||||
Exact match “Boiler repair, rolling, flame cut metal, fabrication, broken welds, threaded stud replacement, fire brick, refractory, on-site/off-site work and more.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “welder certification testing services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 137 welder certification testing services based in the United States
See the full list, filter by size, metro and specialty, and access 273 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Welder certification testing services based in the United States at a glance
As of Nov 3, 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 137 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 “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. 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 273 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.
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 based in the United States?
RevenueBase identified 137 company matches for welder certification 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?
Magnetic Inspection Laboratory, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most welder certification testing services?
Houston leads with 6 company records, followed by San Antonio (4) and Anaheim (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 273 professional contacts with verified work emails tracked across these 137 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.
Ready to reach these companies? Verified emails and direct dials for all 137 welder certification testing services based in the United States. Start with a free account, no credit card.
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Welder certification testing services by geography
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.
More company lists
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- Lists by location
- Lists A-Z
- New lists
- Welder certification testing services based in Australia
- Welder certification testing services based in Canada
- Welder certification testing services based in Germany
- Welder certification testing services based in the Netherlands
- Welder certification testing services based in the United Kingdom
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Company intelligence · public preview
Top 25 welder certification testing services based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 137 matching company records for welder certification testing services based in the United States, with 992 tracked contacts and 273 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 3, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 welder certification testing services based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Magnetic Inspection Laboratory, INCmilinc.com HQ: Elk Grove Village, IL, United StatesReported employees: 201-500 | Elk Grove Village, IL, United States | 201-500 | Exact match | 84 contacts → |
“MIL provides the following services to the Aerospace, Medical, Industrial and Power Generation industries: • Non-destructive testing including Fluorescent Penetrant, Magnetic…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Acute Technological Servicesacutetechserv.comHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 60 contacts → |
“Based in Houston, Texas, Acute Technological Services (ATS) provides welding engineering and welding services worldwide.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Weld Spec Inspection Services An HMT Companyweldspecinc.com HQ: Lumberton, TX, United StatesReported employees: 51-200 | Lumberton, TX, United States | 51-200 | Exact match | 55 contacts → |
“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 description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Applied Inspection Systems, INCappliedinspection.com HQ: Benton, NC, United StatesReported employees: 11-50 | Benton, NC, United States | 11-50 | Exact match | 31 contacts → |
“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 description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Phoenix National Laboratoriespnltest.com HQ: Tempe, AZ, United StatesReported employees: 51-200 | Tempe, AZ, United States | 51-200 | Exact match | 30 contacts → |
“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 description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Flawless Steel Welding, LLCfsw-denver.com HQ: Denver, CO, United StatesReported employees: 11-50 | Denver, CO, United States | 11-50 | Exact match | 20 contacts → |
“Our business is dedicated to completing the job through final inspection in the scope of our services.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | United Technical INCunitedtech1.com HQ: Whitmore Lake, MI, United StatesReported employees: 11-50 | Whitmore Lake, MI, United States | 11-50 | Exact match | 19 contacts → |
“United Technical is a leading-edge, full-service testing facility providing metallurgical examination, destructive/nondestructive testing, and technical consulting services.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | SQS Ndt, LPsqsndtlp.com HQ: Sanger, TX, United StatesReported employees: 11-50 | Sanger, TX, United States | 11-50 | Exact match | 18 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Bonded Inspectionsbondedinspections.com HQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 17 contacts → |
“Since being founded in 1964, Bonded Inspections has become one of the leading Non Destructive Testing Companies in Texas and Oklahoma.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | QC Laboratories, INCqclabs.net HQ: Hollywood, FL, United StatesReported employees: 11-50 | Hollywood, FL, United States | 11-50 | Exact match | 15 contacts → |
“QC Laboratories Inc.(QC Labs) is an industrial/commercial Nondestructive Testing Laboratory (NDT) incorporated in the State of Florida in 1965.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Elite Welding Academyeliteweldingacademy.com HQ: Cincinnati, OH, United StatesReported employees: 11-50 | Cincinnati, OH, United States | 11-50 | Exact match | 15 contacts → |
“Elite Welding Academy is an Accredited Test Facility (ATF) that performs weld tests as well as accredited education center that teaches welding in Cincinnati, OH, and South Point…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Material Inspection Technology, Inc. Mit, INCmaterial-inspection.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 14 contacts → |
“Material Inspection Technology (MIT, Inc.) is a Houston-based provider of Non-Destructive Testing (NDT), fabrication quality assurance, and third-party inspection services.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Triangle Engineering, INCtrieng.com HQ: Hanover, MA, United StatesReported employees: 11-50 | Hanover, MA, United States | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Maxwell Welding & Machinemwm-inc.com HQ: Burgettstown, PA, United StatesReported employees: 1-10 | Burgettstown, PA, United States | 1-10 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Inspection Specialties, INCisidenver.net HQ: Denver, TX, United StatesReported employees: 11-50 | Denver, TX, United States | 11-50 | Exact match | 12 contacts → |
“The company was founded in 2006 providing CWI services and quickly grew to provide much needed quality inspection services to the construction industry.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Atlantic Piping, INCatlanticpiping.com HQ: Richmond, VA, United StatesReported employees: 51-200 | Richmond, VA, United States | 51-200 | Exact match | 11 contacts → |
“API maintains WPS on carbon, stainless, nickel alloys - such as Inconel and all power piping chrome such as P91.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Whitehouse Laboratorieswhlabs.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 10 contacts → |
“WH Labs (Whitehouse Laboratories) is an ISO 9001:2015, ISO/IEC 17025:2017, and AWS Accredited independent testing and analysis laboratory based in Houston, Texas, with ASME U&R…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Partek Laboratories INCparteklab.com HQ: Houma, LA, United StatesReported employees: 11-50 | Houma, LA, United States | 11-50 | Exact match | 10 contacts → |
“Partek Laboratories Inc has the largest and most technologically advanced metallurgical testing labs and welder certification facilities along the Gulf Coast.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Dean's Certified Welding INCdeanswelding.com HQ: Fallbrook, CA, United StatesReported employees: 1-10 | Fallbrook, CA, United States | 1-10 | Exact match | 10 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Atlas Trainingatlasapitraining.com HQ: Groves, TX, United StatesReported employees: 1-10 | Groves, TX, United States | 1-10 | Exact match | 8 contacts → |
“If you're looking to prepare for an API certification exam, then Atlas Training Online is the most affordable and effective way.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | B&b Energy Servicesbandbenergyservices.com HQ: Chester, WV, United StatesReported employees: 11-50 | Chester, WV, United States | 11-50 | Exact match | 8 contacts → |
“A Gas & Oilfield Specialty Service Company “R” Stamp code certified Welding: In Service - API - ASME Certified Stainless & Carbon Civil Work Painting & Coating Excavation” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | AMS Ndt, INCamsndt.com HQ: Miami, FL, United StatesReported employees: 11-50 | Miami, FL, United States | 11-50 | Exact match | 7 contacts → |
“Aerospace Maintenance Supplies and Services (AMS Inc.) is an FAA/EASA certificated Part 145 Repair Station located in Medley, FL.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Kidder Incorporatedkidderinc.com HQ: Bayou Vista, LA, United StatesReported employees: 11-50 | Bayou Vista, LA, United States | 11-50 | Exact match | 7 contacts → |
“Kidder Incorporated offers complete welding services including; contract welding, production welding, and manual welding.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Frac NDTfracndt.com HQ: Covington, LA, United StatesReported employees: 11-50 | Covington, LA, United States | 11-50 | Exact match | 5 contacts → |
“Non-destructive testing and flow iron certification.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Heavy Metal Welding & Fabrication LLCheavymetalwelders.comHQ: Minneapolis, MN, United StatesReported employees: 1-10 | Minneapolis, MN, United States | 1-10 | Exact match | 5 contacts → |
“Boiler repair, rolling, flame cut metal, fabrication, broken welds, threaded stud replacement, fire brick, refractory, on-site/off-site work and more.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 137 company matches
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Welder certification testing services: dataset insights
November 3, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
135 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 137 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 3, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for welder certification testing services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many welder certification testing services did RevenueBase find based in the United States?
The saved snapshot records 137 matching company records, 992 tracked contacts and 273 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 3, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Welder certification testing services by geography
Cite this list
RevenueBase Data Team. Top 25 welder certification testing services based in the United States. Snapshot: November 3, 2026. https://revenuebase.ai/companies/welder-certification-testing-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Welder certification testing services based in Australia
- Welder certification testing services based in Canada
- Welder certification testing services based in Germany
- Welder certification testing services based in the Netherlands
- Welder certification testing services based in the United Kingdom
- AI companies based in the United States
Company intelligence · public preview
Top 25 welder certification testing services based in the United States
RevenueBase records 137 matching company records for welder certification testing services based in the United States, with 992 tracked contacts and 273 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 3, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 welder certification testing services based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Magnetic Inspection Laboratory, INCmilinc.com HQ: Elk Grove Village, IL, United StatesReported employees: 201-500 | Elk Grove Village, IL, United States | 201-500 | Exact match | 84 contacts → |
“MIL provides the following services to the Aerospace, Medical, Industrial and Power Generation industries: • Non-destructive testing including Fluorescent Penetrant, Magnetic…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Acute Technological Servicesacutetechserv.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 60 contacts → |
“Based in Houston, Texas, Acute Technological Services (ATS) provides welding engineering and welding services worldwide.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Weld Spec Inspection Services An HMT Companyweldspecinc.com HQ: Lumberton, TX, United StatesReported employees: 51-200 | Lumberton, TX, United States | 51-200 | Exact match | 55 contacts → |
“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 description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Applied Inspection Systems, INCappliedinspection.com HQ: Benton, NC, United StatesReported employees: 11-50 | Benton, NC, United States | 11-50 | Exact match | 31 contacts → |
“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 description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Phoenix National Laboratoriespnltest.com HQ: Tempe, AZ, United StatesReported employees: 51-200 | Tempe, AZ, United States | 51-200 | Exact match | 30 contacts → |
“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 description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Flawless Steel Welding, LLCfsw-denver.com HQ: Denver, CO, United StatesReported employees: 11-50 | Denver, CO, United States | 11-50 | Exact match | 20 contacts → |
“Our business is dedicated to completing the job through final inspection in the scope of our services.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | United Technical INCunitedtech1.com HQ: Whitmore Lake, MI, United StatesReported employees: 11-50 | Whitmore Lake, MI, United States | 11-50 | Exact match | 19 contacts → |
“United Technical is a leading-edge, full-service testing facility providing metallurgical examination, destructive/nondestructive testing, and technical consulting services.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | SQS Ndt, LPsqsndtlp.com HQ: Sanger, TX, United StatesReported employees: 11-50 | Sanger, TX, United States | 11-50 | Exact match | 18 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Bonded Inspectionsbondedinspections.com HQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 17 contacts → |
“Since being founded in 1964, Bonded Inspections has become one of the leading Non Destructive Testing Companies in Texas and Oklahoma.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | QC Laboratories, INCqclabs.net HQ: Hollywood, FL, United StatesReported employees: 11-50 | Hollywood, FL, United States | 11-50 | Exact match | 15 contacts → |
“QC Laboratories Inc.(QC Labs) is an industrial/commercial Nondestructive Testing Laboratory (NDT) incorporated in the State of Florida in 1965.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Elite Welding Academyeliteweldingacademy.com HQ: Cincinnati, OH, United StatesReported employees: 11-50 | Cincinnati, OH, United States | 11-50 | Exact match | 15 contacts → |
“Elite Welding Academy is an Accredited Test Facility (ATF) that performs weld tests as well as accredited education center that teaches welding in Cincinnati, OH, and South Point…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Material Inspection Technology, Inc. Mit, INCmaterial-inspection.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 14 contacts → |
“Material Inspection Technology (MIT, Inc.) is a Houston-based provider of Non-Destructive Testing (NDT), fabrication quality assurance, and third-party inspection services.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Triangle Engineering, INCtrieng.com HQ: Hanover, MA, United StatesReported employees: 11-50 | Hanover, MA, United States | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Maxwell Welding & Machinemwm-inc.com HQ: Burgettstown, PA, United StatesReported employees: 1-10 | Burgettstown, PA, United States | 1-10 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Inspection Specialties, INCisidenver.net HQ: Denver, TX, United StatesReported employees: 11-50 | Denver, TX, United States | 11-50 | Exact match | 12 contacts → |
“The company was founded in 2006 providing CWI services and quickly grew to provide much needed quality inspection services to the construction industry.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Atlantic Piping, INCatlanticpiping.com HQ: Richmond, VA, United StatesReported employees: 51-200 | Richmond, VA, United States | 51-200 | Exact match | 11 contacts → |
“API maintains WPS on carbon, stainless, nickel alloys - such as Inconel and all power piping chrome such as P91.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Whitehouse Laboratorieswhlabs.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 10 contacts → |
“WH Labs (Whitehouse Laboratories) is an ISO 9001:2015, ISO/IEC 17025:2017, and AWS Accredited independent testing and analysis laboratory based in Houston, Texas, with ASME U&R…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Partek Laboratories INCparteklab.com HQ: Houma, LA, United StatesReported employees: 11-50 | Houma, LA, United States | 11-50 | Exact match | 10 contacts → |
“Partek Laboratories Inc has the largest and most technologically advanced metallurgical testing labs and welder certification facilities along the Gulf Coast.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Dean's Certified Welding INCdeanswelding.com HQ: Fallbrook, CA, United StatesReported employees: 1-10 | Fallbrook, CA, United States | 1-10 | Exact match | 10 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Atlas Trainingatlasapitraining.com HQ: Groves, TX, United StatesReported employees: 1-10 | Groves, TX, United States | 1-10 | Exact match | 8 contacts → |
“If you're looking to prepare for an API certification exam, then Atlas Training Online is the most affordable and effective way.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | B&b Energy Servicesbandbenergyservices.com HQ: Chester, WV, United StatesReported employees: 11-50 | Chester, WV, United States | 11-50 | Exact match | 8 contacts → |
“A Gas & Oilfield Specialty Service Company “R” Stamp code certified Welding: In Service - API - ASME Certified Stainless & Carbon Civil Work Painting & Coating Excavation” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | AMS Ndt, INCamsndt.com HQ: Miami, FL, United StatesReported employees: 11-50 | Miami, FL, United States | 11-50 | Exact match | 7 contacts → |
“Aerospace Maintenance Supplies and Services (AMS Inc.) is an FAA/EASA certificated Part 145 Repair Station located in Medley, FL.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Kidder Incorporatedkidderinc.com HQ: Bayou Vista, LA, United StatesReported employees: 11-50 | Bayou Vista, LA, United States | 11-50 | Exact match | 7 contacts → |
“Kidder Incorporated offers complete welding services including; contract welding, production welding, and manual welding.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Frac NDTfracndt.com HQ: Covington, LA, United StatesReported employees: 11-50 | Covington, LA, United States | 11-50 | Exact match | 5 contacts → |
“Non-destructive testing and flow iron certification.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Heavy Metal Welding & Fabrication LLCheavymetalwelders.com HQ: Minneapolis, MN, United StatesReported employees: 1-10 | Minneapolis, MN, United States | 1-10 | Exact match | 5 contacts → |
“Boiler repair, rolling, flame cut metal, fabrication, broken welds, threaded stud replacement, fire brick, refractory, on-site/off-site work and more.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 137 company matches
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Welder certification testing services: dataset insights
November 3, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
135 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 137 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 3, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for welder certification testing services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many welder certification testing services did RevenueBase find based in the United States?
The saved snapshot records 137 matching company records, 992 tracked contacts and 273 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 3, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Welder certification testing services by geography
Cite this list
RevenueBase Data Team. Top 25 welder certification testing services based in the United States. Snapshot: November 3, 2026. https://revenuebase.ai/companies/welder-certification-testing-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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