Company lists · Data refreshed October 2026

Top 25 Refinery automation contractors based in the United States

RevenueBase identified 1,629 company matches for refinery automation contractors associated with the United States as of October 2026 and tracks 58,964 professional contacts across them, including 21,464 with verified work emails. Houston is the largest hub.

This list covers company matches for refinery automation contractors 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 October 22, 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 Oct 22, 2026 How this list was built
1,629Companies
58,964Contacts tracked
21,464Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest refinery automation contractors based in the United States

Ranked by team size
Top 25 of 1,629 company matches for refinery automation contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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 matchBaton Rouge, LA, United StatesHQ recorded Oct 22, 20265,001-10,0003,379 contacts →

Exact match

“At MMR we believe that no matter how much you achieve, you should never forget where you came from.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2Exact matchLisle, IL, United StatesHQ recorded Oct 22, 20261,001-5,0003,020 contacts →

Exact match

“ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3Exact matchBaton Rouge, LA, United StatesHQ recorded Oct 22, 20261,001-5,0002,920 contacts →

Exact match

“We began as a merit shop general industrial contractor back in 1979.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4Exact matchAurora, OH, United StatesHQ recorded Oct 22, 20261,001-5,0001,267 contacts →

Exact match

“As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026201-5001,203 contacts →

Exact match

“Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6Exact matchSioux Center, IA, United StatesHQ recorded Oct 22, 20261,001-5,000986 contacts →

Exact match

“As a Partner Interstates is your trusted partner for electrical, automation, and operational technology needs.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7Exact matchAuburn Hills, MI, United StatesHQ recorded Oct 22, 2026501-1,000959 contacts →

Exact match

“Convergix Automation Solutions designs, engineers and integrates hardware and software to automate its customers' operations.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8Exact matchLewisville, TX, United StatesHQ recorded Oct 22, 20261,001-5,000930 contacts →

Exact match

“Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026501-1,000899 contacts →

Exact match

“INTECH Automation & Intelligence is a globally renowned industrial automation & digitalization technology company.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10Exact matchBaton Rouge, LA, United StatesHQ recorded Oct 22, 2026501-1,000870 contacts →

Exact match

“We love our customers and are committed to providing Better Automation and Controls Solutions, Products, Engineering, Services and Support to them.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Oct 22, 20261,001-5,000725 contacts →

Exact match

“WYATT is recognized for executing complex maintenance, outage, turnaround, and capital construction projects across the Oil, Gas & Chemical, and Power markets.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12Exact matchStafford, TX, United StatesHQ recorded Oct 22, 2026501-1,000707 contacts →

Exact match

“Puffer‑Sweiven has supported process operations for over 80 years-helping facilities run safer, smarter, and more reliably.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13Exact matchWest Chester, OH, United StatesHQ recorded Oct 22, 2026501-1,000701 contacts →

Exact match

“E Tech Group is one of the largest engineering and system integration firms in the United States.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14Exact matchEden Prairie, MN, United StatesHQ recorded Oct 22, 2026501-1,000664 contacts →

Exact match

“Wunderlich-Malec Engineering is a nationally recognized, 100% employee-owned leader in advanced engineering and control system solutions.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15Exact matchBaton Rouge, LA, United StatesHQ recorded Oct 22, 2026501-1,000624 contacts →

Exact match

“Setpoint Integrated Solutions, a Vytl Company is a leading integrated solutions and services provider in the process control industry.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Oct 22, 20261,001-5,000621 contacts →

Exact match

“The Mundy Companies is a privately owned company headquartered in Houston, Texas with offices Pasadena, TX, Nederland, TX, and Wilmington, NC.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026501-1,000573 contacts →

Exact match

“Our expertise encompasses the full spectrum of system technologies from pneumatic - hydraulic control systems to state of the art programmable solutions to chemical injection…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026501-1,000551 contacts →

Exact match

“Ingenero's goal is to be the best process engineering firm by delivering the highest quality service and software solutions at the lowest cost.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026n/a545 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20Exact matchOklahoma City, OK, United StatesHQ recorded Oct 22, 2026501-1,000531 contacts →

Exact match

“Kimray is a global solutions partner in the energy industry.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21Exact matchLa Porte, TX, United StatesHQ recorded Oct 22, 20261,001-5,000514 contacts →

Exact match

“When we formed Contech in 1980, our goal was to create a specialized engineering and construction company to provide a full range of system independent services for process…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22Exact matchBeaumont, TX, United StatesHQ recorded Oct 22, 20261,001-5,000503 contacts →

Exact match

“RICHARD is a full-service engineering, procurement and construction firm in the petrochemical and refining industry.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23Exact matchBaytown, TX, United StatesHQ recorded Oct 22, 20261,001-5,000479 contacts →

Exact match

“Turn2 Specialty Companies is the premier provider of specialty turnaround services in the refining, petrochemical, and power industries.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24Exact matchCovington, LA, United StatesHQ recorded Oct 22, 202651-200474 contacts →

Exact match

“Ardent Services, LLC (Ardent) is a leading provider of high-quality power, control, process-automation, and electrical and instrumentation (E&I) services for process industries…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Oct 22, 20265,001-10,000447 contacts →

Exact match

“With decades of refinery, petrochemical, fertilizer and power plant experience, CAM Industrial Solutions has become the standard in heavy industrial maintenance, turnaround and…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase

Showing 25 of 1,629 refinery automation contractors based in the United States

See the full list, filter by size, metro and specialty, and access 21,464 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Refinery automation contractors based in the United States at a glance

As of Oct 22, 2026
36.4%Verified-email coverage
36.2Average contacts per company
11-50Median size (employees)
7.7%Largest-city concentration · Houston
Oct 22, 2026Page data refreshed

Companies by employee count

1-10
632
11-50
590
51-200
266
201-500
82
501-1,000
31
1,001-5,000
24
5,001-10,000
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 1,629 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 “refinery automation contractors” 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 21,464 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 October 22, 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.

Refinery automation contractors by metro

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 “refinery automation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery automation contractors are there based in the United States?

RevenueBase identified 1,629 company matches for refinery automation contractors associated with the United States as of October 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?

MMR Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery automation contractors?

Houston leads with 126 company records, followed by Tulsa (17) and Odessa (14).

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 21,464 professional contacts with verified work emails tracked across these 1,629 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 October 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,629 refinery automation contractors 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.