Company lists · Data refreshed September 2026
Top 25 Gas line inspection services worldwide
RevenueBase identified 1,171 gas line inspection services worldwide as of September 2026 and tracks 24,151 professional contacts across them, including 6,766 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers gas line inspection services 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 19, 2026. Country and city lists for gas line inspection services 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.
The 25 largest gas line inspection services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,463 contacts → | ||||
Partial 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 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,275 contacts → | ||||
Partial evidence “Kinectrics is an integrated lifecycle management services company providing testing, inspection, certification and engineering consulting for the electric power generation…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,212 contacts → | ||||
Indirect evidence “One of the largest independent Asset Integrity companies.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 799 contacts → | ||||
Partial evidence “Since 1933 Heath has led the industry in the safety of natural gas utilities infrastructure through the innovative and conscientious actions of our employees.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 770 contacts → | ||||
Partial 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 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 680 contacts → | ||||
Partial evidence “Oceaneering Asset Integrity is one of the largest providers of Integrity and Inspection Services in the world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 524 contacts → | ||||
Partial evidence “We’ve been a leader in the inspection and construction industry for over 25 years.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 471 contacts → | ||||
Partial evidence “We are a fast-growing global company offering inspection, industrial, and environmental services to the critical infrastructure sector.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 455 contacts → | ||||
Indirect evidence “TEAM is a leading industrial services company offering an array of specialized services related to the construction, maintenance, and monitoring of pressurized piping and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 356 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 262 contacts → | ||||
Strong evidence “Setting the Standard for Premier Inspection Services in the Oil & Gas Industry through our Dedication to Tradition / Talent / Technology / Teamwork TJ Inspection provides the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 257 contacts → | ||||
Strong evidence “PIPECARE Group is a global leader in in-line inspection and integrity services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 254 contacts → | ||||
Indirect evidence “LIN SCAN is the brand name of “LIN SCAN ADVANCED PIPELINES & TANKS SERVICES”.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 226 contacts → | ||||
Partial evidence “The TechCorr name is synonymous with safe, quality inspection services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 213 contacts → | ||||
Partial evidence “Pro-Surve Technical Services is an advanced non-destructive testing and inspection company.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 178 contacts → | ||||
Indirect evidence “Kwaliteit Gasmeting Nederland BV (KGN) was founded in 2011 to check if containers arriving to the port of Rotterdam contain fumigants/pesticides and -/or production gasses in…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 175 contacts → | ||||
Partial evidence “ENTEGRA® is the pioneer and sole provider of true Ultra-High Resolution (UHR) Magnetic Flux Leakage (MFL) inline inspection systems for pipeline integrity assessment.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 150 contacts → | ||||
Indirect evidence “We are deeply passionate about technology, innovation and customers, that’s why our purpose is to deliver the best pipeline leak detection and simulation solutions with the best…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 149 contacts → | ||||
Partial evidence “QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 138 contacts → | ||||
Partial evidence “The Kleinfelder Group, Inc.(“Kleinfelder”), a leading engineering, design, construction management, construction materials inspection and testing, and environmental professional…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 131 contacts → | ||||
Indirect evidence “Kakivik Asset Management is a full service asset integrity management company, specializing in Non-destructive Testing, Rope Access, Laboratory, and Chemical monitoring services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 130 contacts → | ||||
Indirect evidence “INEXCO GROUPE – Expert en surveillance des installations industrielles Créé en 1981 sous le nom de Radiographie Industrielle, INEXCO GROUPE a su évoluer avec les besoins de…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 130 contacts → | ||||
Partial evidence “Since 1978, Coastal Gulf & International, Inc.(CGI) has been a trusted leader in independent inspection, testing, and technical services for the energy, petrochemical, and marine…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 130 contacts → | ||||
Indirect evidence “Welcome to On & Offshore Quality Control Specialists, LLC.” Source: RevenueBase Database · checked Sep 19, 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: gas line inspection 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 gas line inspection services.
- Partial evidence
- Its own public description names part of gas line inspection services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name gas line inspection 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 1,171 gas line inspection services worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 6,766 reachable decision-makers.
Free signup · no credit card
Gas line inspection services worldwide at a glance
As of Sep 19, 2026Companies by employee count
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 gas line inspection 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.
- Coverage
- Every country. Country and city lists for gas line inspection services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “gas line inspection 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 gas line inspection 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 gas line inspection services, 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, 6,766 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 19, 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.
Gas line inspection services by location
7 lists · largest firstEvery Gas line inspection services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Gas line inspection services based in the United States283
- Gas line inspection services based in Brazil104
- Gas line inspection services based in Canada85
- Gas line inspection services based in the United Kingdom55
- Gas line inspection services based in France46
- Gas line inspection services based in India43
- Gas line inspection services based in Australia25
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 gas line inspection 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 gas line inspection services are there worldwide?
RevenueBase identified 1,171 gas line inspection services 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 gas line inspection services?
The United States leads with 283 companies, followed by Brazil (104) and Canada (85). Every gas line inspection services list by country and city is linked on this page.
Which city has the most gas line inspection services?
Houston leads with 34 headquartered companies, followed by Calgary (23) and Edmonton (17).
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 6,766 verified decision-maker contacts tracked across these 1,171 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,171 gas line inspection services worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.