Company lists · Data refreshed October 2026
Top 25 Chemical plant engineering firms based in the United States
RevenueBase identified 952 company matches for chemical plant engineering firms associated with the United States as of October 2026 and tracks 41,582 professional contacts across them, including 11,402 with verified work emails. Houston is the largest hub.
This list covers company matches for chemical plant engineering firms 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 9, 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 chemical plant engineering firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 7,053 contacts → | ||||
Exact match “Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 2 | 3,615 contacts → | ||||
Exact match “S&B is an engineer and constructor that designs and builds some of the largest and most complex industrial facilities in the world.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 3 | 1,881 contacts → | ||||
Exact match “Hargrove is a full-service engineering, procurement, and construction management firm delivering multi-discipline engineering, project delivery, controls & automation, and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 4 | 921 contacts → | ||||
Exact match “Since 1979, Zeeco is the trusted worldwide source for the design and manufacturing of combustion and environmental solutions for the refining, petrochemical, production, power and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 5 | 551 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 9, 2026 · View company records in RevenueBase | |||||
| 6 | 545 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 7 | 535 contacts → | ||||
Exact match “ARB Inc.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 8 | 514 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 9, 2026 · View company records in RevenueBase | |||||
| 9 | 503 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 9, 2026 · View company records in RevenueBase | |||||
| 10 | 488 contacts → | ||||
Exact match “The Vincit Group is a vertically-integrated organization of member companies that provides a single-source solution for chemical services, contract management, and automation and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 11 | 431 contacts → | ||||
Exact match “As part of the Quanta Services Family of Companies (NYSE: PWR)- Stronghold provides the safest, leanest, most efficient, quality solutions for the refinery, petrochemical and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 12 | 412 contacts → | ||||
Exact match “ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 13 | 394 contacts → | ||||
Exact match “Mangan Inc, an Automation & Engineering Firm, provides the highest quality services for the Refining, Gas & Oil, Pipeline, Renewable, Chemical, and Biopharm Industries.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 14 | 328 contacts → | ||||
Exact match “icon Mechanical is a full service mechanical construction and engineering firm specializing in the design, installation, modification and on-going service of process piping…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 15 | 325 contacts → | ||||
Exact match “Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 16 | 314 contacts → | ||||
Exact match “Founded in 1977 as The Roberts Company, Roberts has grown from a small contractor to a large full service constructor and fabricator.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 17 | 290 contacts → | ||||
Exact match “AltairStrickland is a specialty mechanical contracting company serving the refining, petrochemical, power and fertilizer industries.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 18 | 286 contacts → | ||||
Exact match “MECS is the global leader in sulfuric acid process technology and related high performance products custom engineered for acid plant production environments.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 19 | 282 contacts → | ||||
Exact match “FATEH GROUP is committed to provide its customers with high-quality services and products.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 20 | 274 contacts → | ||||
Exact match “ADF Engineering provides comprehensive Process and Facility engineering services to the food, feed, biofuels, bioscience, and consumer products industries.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 21 | 250 contacts → | ||||
Exact match “H+M Industrial EPC has provided end-to-end capital project solutions to the Energy and Chemicals industries since 1988.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 22 | 249 contacts → | ||||
Exact match “Chemtex is a global engineering and technology company.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 23 | 247 contacts → | ||||
Exact match “BSI Engineering is a full-service engineering consulting firm dedicated to delivering innovative, efficient, and effective solutions across various industries.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 24 | 222 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 25 | 220 contacts → | ||||
Exact match “For over a half century our professional staff - in meeting technical, schedule, budget, and regulatory requirements - has successfully completed projects in the U.S.” Recorded in the RevenueBase company graph · Oct 9, 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 “chemical plant engineering firms”. 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 952 chemical plant engineering firms based in the United States
See the full list, filter by size, metro and specialty, and access 11,402 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Chemical plant engineering firms based in the United States at a glance
As of Oct 9, 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 952 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 “chemical plant engineering firms” 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 11,402 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 9, 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.
Chemical plant engineering firms 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 “chemical plant engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many chemical plant engineering firms are there based in the United States?
RevenueBase identified 952 company matches for chemical plant engineering firms 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?
Zachry Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most chemical plant engineering firms?
Houston leads with 113 company records, followed by Tulsa (16) and Baton Rouge (13).
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 11,402 professional contacts with verified work emails tracked across these 952 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 9, 2026.
Ready to reach these companies? Verified emails and direct dials for all 952 chemical plant engineering firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Chemical plant engineering firms by geography
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India
- Chemical plant engineering firms based in Thane, India
- Chemical plant engineering firms based in Vadodara, India
- Chemical plant engineering firms based in Tehran, Iran
- Chemical plant engineering firms based in Milan, Italy
- Chemical plant engineering firms based in Singapore, Singapore
- Chemical plant engineering firms based in Madrid, Spain
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India
Company intelligence · public preview
Top 25 chemical plant engineering firms 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 952 matching company records for chemical plant engineering firms based in the United States, with 41,582 tracked contacts and 11,402 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: October 9, 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 chemical plant engineering firms 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 |  Zachry Groupzachrygroup.comHQ: San Antonio, TX, United StatesReported employees: 10001+ | San Antonio, TX, United States | 10001+ | Exact match | 7,053 contacts → |
“Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  S&bsbec.comHQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 3,615 contacts → |
“S&B is an engineer and constructor that designs and builds some of the largest and most complex industrial facilities in the world.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Hargrove Engineers & Constructorshargrove-epc.comHQ: Mobile, AL, United StatesReported employees: 1,001-5,000 | Mobile, AL, United States | 1,001-5,000 | Exact match | 1,881 contacts → |
“Hargrove is a full-service engineering, procurement, and construction management firm delivering multi-discipline engineering, project delivery, controls & automation, and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Zeeco, INCzeeco.com HQ: Tulsa, OK, United StatesReported employees: 1,001-5,000 | Tulsa, OK, United States | 1,001-5,000 | Exact match | 921 contacts → |
“Since 1979, Zeeco is the trusted worldwide source for the design and manufacturing of combustion and environmental solutions for the refining, petrochemical, production, power and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Ingeneroingenero.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 551 contacts → |
“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 description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Scmi INCscmi-inc.comHQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 545 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 |  Arb, INCprim.comHQ: Irvine, CA, United StatesReported employees: 1,001-5,000 | Irvine, CA, United States | 1,001-5,000 | Exact match | 535 contacts → |
“ARB Inc.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Contech Control Servicescontechnet.comHQ: La Porte, TX, United StatesReported employees: 1,001-5,000 | La Porte, TX, United States | 1,001-5,000 | Exact match | 514 contacts → |
“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 description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Richardrichardepc.com HQ: Beaumont, TX, United StatesReported employees: 1,001-5,000 | Beaumont, TX, United States | 1,001-5,000 | Exact match | 503 contacts → |
“RICHARD is a full-service engineering, procurement and construction firm in the petrochemical and refining industry.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  The Vincit Groupvincitgroup.comHQ: Chattanooga, TN, United StatesReported employees: 5,001-10,000 | Chattanooga, TN, United States | 5,001-10,000 | Exact match | 488 contacts → |
“The Vincit Group is a vertically-integrated organization of member companies that provides a single-source solution for chemical services, contract management, and automation and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  The Stronghold Companiesthestrongholdcompanies.comHQ: La Porte, TX, United StatesReported employees: 5,001-10,000 | La Porte, TX, United States | 5,001-10,000 | Exact match | 431 contacts → |
“As part of the Quanta Services Family of Companies (NYSE: PWR)- Stronghold provides the safest, leanest, most efficient, quality solutions for the refinery, petrochemical and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Recon Management Services, INCrecon-group.comHQ: Sulphur, LA, United StatesReported employees: 501-1,000 | Sulphur, LA, United States | 501-1,000 | Exact match | 412 contacts → |
“ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Mangan INCmanganinc.comHQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 394 contacts → |
“Mangan Inc, an Automation & Engineering Firm, provides the highest quality services for the Refining, Gas & Oil, Pipeline, Renewable, Chemical, and Biopharm Industries.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Icon Mechanicaliconmech.com HQ: Granite City, IL, United StatesReported employees: 201-500 | Granite City, IL, United States | 201-500 | Exact match | 328 contacts → |
“icon Mechanical is a full service mechanical construction and engineering firm specializing in the design, installation, modification and on-going service of process piping…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  C&i Engineeringcieng.comHQ: Louisville, KY, United StatesReported employees: 201-500 | Louisville, KY, United States | 201-500 | Exact match | 325 contacts → |
“Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  The Roberts Companyrobertscompany.comHQ: Winterville, NC, United StatesReported employees: 501-1,000 | Winterville, NC, United States | 501-1,000 | Exact match | 314 contacts → |
“Founded in 1977 as The Roberts Company, Roberts has grown from a small contractor to a large full service constructor and fabricator.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Altairstrickland, LLCaltairstrickland.comHQ: La Porte, TX, United StatesReported employees: 201-500 | La Porte, TX, United States | 201-500 | Exact match | 290 contacts → |
“AltairStrickland is a specialty mechanical contracting company serving the refining, petrochemical, power and fertilizer industries.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | MECSmecsglobal.com HQ: Chesterfield, MO, United StatesReported employees: 201-500 | Chesterfield, MO, United States | 201-500 | Exact match | 286 contacts → |
“MECS is the global leader in sulfuric acid process technology and related high performance products custom engineered for acid plant production environments.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Fateh Groupfatehgroup.comHQ: Cherryfield, ME, United StatesReported employees: 1,001-5,000 | Cherryfield, ME, United States | 1,001-5,000 | Exact match | 282 contacts → |
“FATEH GROUP is committed to provide its customers with high-quality services and products.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  ADF Engineering, INCadfengineering.comHQ: Miamisburg, OH, United StatesReported employees: 51-200 | Miamisburg, OH, United States | 51-200 | Exact match | 274 contacts → |
“ADF Engineering provides comprehensive Process and Facility engineering services to the food, feed, biofuels, bioscience, and consumer products industries.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | H M Industrial EPChm-ec.com HQ: Pasadena, TX, United StatesReported employees: 501-1,000 | Pasadena, TX, United States | 501-1,000 | Exact match | 250 contacts → |
“H+M Industrial EPC has provided end-to-end capital project solutions to the Energy and Chemicals industries since 1988.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Chemtexchemtexus.comHQ: Wilmington, NC, United StatesReported employees: 201-500 | Wilmington, NC, United States | 201-500 | Exact match | 249 contacts → |
“Chemtex is a global engineering and technology company.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  BSI Engineeringbsiengr.comHQ: Mason, OH, United StatesReported employees: 201-500 | Mason, OH, United States | 201-500 | Exact match | 247 contacts → |
“BSI Engineering is a full-service engineering consulting firm dedicated to delivering innovative, efficient, and effective solutions across various industries.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Burkes Mechanical, INCburkesmechanical.com HQ: Brent, AL, United StatesReported employees: 201-500 | Brent, AL, United States | 201-500 | Exact match | 222 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 |  Waldemar S. Nelson & Co., INCwsnelson.comHQ: New Orleans, LA, United StatesReported employees: 201-500 | New Orleans, LA, United States | 201-500 | Exact match | 220 contacts → |
“For over a half century our professional staff - in meeting technical, schedule, budget, and regulatory requirements - has successfully completed projects in the U.S.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 952 company matches
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Chemical plant engineering firms: dataset insights
October 9, 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
951 records in the displayed employee bands.
1 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 952 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: October 9, 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 ↗
Chemical plant engineering firms by metro
Questions about this company list
What does Exact match mean for chemical plant engineering firms?
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 chemical plant engineering firms did RevenueBase find based in the United States?
The saved snapshot records 952 matching company records, 41,582 tracked contacts and 11,402 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: October 9, 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
Chemical plant engineering firms by geography
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India
- Chemical plant engineering firms based in Thane, India
- Chemical plant engineering firms based in Vadodara, India
- Chemical plant engineering firms based in Tehran, Iran
- Chemical plant engineering firms based in Milan, Italy
- Chemical plant engineering firms based in Singapore, Singapore
- Chemical plant engineering firms based in Madrid, Spain
Cite this list
RevenueBase Data Team. Top 25 chemical plant engineering firms based in the United States. Snapshot: October 9, 2026. https://revenuebase.ai/companies/chemical-plant-engineering-firms/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
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India
Company intelligence · public preview
Top 25 chemical plant engineering firms based in the United States
RevenueBase records 952 matching company records for chemical plant engineering firms based in the United States, with 41,582 tracked contacts and 11,402 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: October 9, 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 chemical plant engineering firms 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 | Zachry Groupzachrygroup.com HQ: San Antonio, TX, United StatesReported employees: 10001+ | San Antonio, TX, United States | 10001+ | Exact match | 7,053 contacts → |
“Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | S&bsbec.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 3,615 contacts → |
“S&B is an engineer and constructor that designs and builds some of the largest and most complex industrial facilities in the world.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Hargrove Engineers & Constructorshargrove-epc.com HQ: Mobile, AL, United StatesReported employees: 1,001-5,000 | Mobile, AL, United States | 1,001-5,000 | Exact match | 1,881 contacts → |
“Hargrove is a full-service engineering, procurement, and construction management firm delivering multi-discipline engineering, project delivery, controls & automation, and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Zeeco, INCzeeco.com HQ: Tulsa, OK, United StatesReported employees: 1,001-5,000 | Tulsa, OK, United States | 1,001-5,000 | Exact match | 921 contacts → |
“Since 1979, Zeeco is the trusted worldwide source for the design and manufacturing of combustion and environmental solutions for the refining, petrochemical, production, power and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Ingeneroingenero.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 551 contacts → |
“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 description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Scmi INCscmi-inc.com HQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 545 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | Arb, INCprim.com HQ: Irvine, CA, United StatesReported employees: 1,001-5,000 | Irvine, CA, United States | 1,001-5,000 | Exact match | 535 contacts → |
“ARB Inc.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Contech Control Servicescontechnet.com HQ: La Porte, TX, United StatesReported employees: 1,001-5,000 | La Porte, TX, United States | 1,001-5,000 | Exact match | 514 contacts → |
“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 description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Richardrichardepc.com HQ: Beaumont, TX, United StatesReported employees: 1,001-5,000 | Beaumont, TX, United States | 1,001-5,000 | Exact match | 503 contacts → |
“RICHARD is a full-service engineering, procurement and construction firm in the petrochemical and refining industry.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | The Vincit Groupvincitgroup.com HQ: Chattanooga, TN, United StatesReported employees: 5,001-10,000 | Chattanooga, TN, United States | 5,001-10,000 | Exact match | 488 contacts → |
“The Vincit Group is a vertically-integrated organization of member companies that provides a single-source solution for chemical services, contract management, and automation and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | The Stronghold Companiesthestrongholdcompanies.com HQ: La Porte, TX, United StatesReported employees: 5,001-10,000 | La Porte, TX, United States | 5,001-10,000 | Exact match | 431 contacts → |
“As part of the Quanta Services Family of Companies (NYSE: PWR)- Stronghold provides the safest, leanest, most efficient, quality solutions for the refinery, petrochemical and…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Recon Management Services, INCrecon-group.com HQ: Sulphur, LA, United StatesReported employees: 501-1,000 | Sulphur, LA, United States | 501-1,000 | Exact match | 412 contacts → |
“ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Mangan INCmanganinc.com HQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 394 contacts → |
“Mangan Inc, an Automation & Engineering Firm, provides the highest quality services for the Refining, Gas & Oil, Pipeline, Renewable, Chemical, and Biopharm Industries.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Icon Mechanicaliconmech.com HQ: Granite City, IL, United StatesReported employees: 201-500 | Granite City, IL, United States | 201-500 | Exact match | 328 contacts → |
“icon Mechanical is a full service mechanical construction and engineering firm specializing in the design, installation, modification and on-going service of process piping…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | C&i Engineeringcieng.com HQ: Louisville, KY, United StatesReported employees: 201-500 | Louisville, KY, United States | 201-500 | Exact match | 325 contacts → |
“Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | The Roberts Companyrobertscompany.com HQ: Winterville, NC, United StatesReported employees: 501-1,000 | Winterville, NC, United States | 501-1,000 | Exact match | 314 contacts → |
“Founded in 1977 as The Roberts Company, Roberts has grown from a small contractor to a large full service constructor and fabricator.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Altairstrickland, LLCaltairstrickland.com HQ: La Porte, TX, United StatesReported employees: 201-500 | La Porte, TX, United States | 201-500 | Exact match | 290 contacts → |
“AltairStrickland is a specialty mechanical contracting company serving the refining, petrochemical, power and fertilizer industries.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | MECSmecsglobal.com HQ: Chesterfield, MO, United StatesReported employees: 201-500 | Chesterfield, MO, United States | 201-500 | Exact match | 286 contacts → |
“MECS is the global leader in sulfuric acid process technology and related high performance products custom engineered for acid plant production environments.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Fateh Groupfatehgroup.com HQ: Cherryfield, ME, United StatesReported employees: 1,001-5,000 | Cherryfield, ME, United States | 1,001-5,000 | Exact match | 282 contacts → |
“FATEH GROUP is committed to provide its customers with high-quality services and products.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | ADF Engineering, INCadfengineering.com HQ: Miamisburg, OH, United StatesReported employees: 51-200 | Miamisburg, OH, United States | 51-200 | Exact match | 274 contacts → |
“ADF Engineering provides comprehensive Process and Facility engineering services to the food, feed, biofuels, bioscience, and consumer products industries.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | H M Industrial EPChm-ec.com HQ: Pasadena, TX, United StatesReported employees: 501-1,000 | Pasadena, TX, United States | 501-1,000 | Exact match | 250 contacts → |
“H+M Industrial EPC has provided end-to-end capital project solutions to the Energy and Chemicals industries since 1988.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Chemtexchemtexus.com HQ: Wilmington, NC, United StatesReported employees: 201-500 | Wilmington, NC, United States | 201-500 | Exact match | 249 contacts → |
“Chemtex is a global engineering and technology company.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | BSI Engineeringbsiengr.com HQ: Mason, OH, United StatesReported employees: 201-500 | Mason, OH, United States | 201-500 | Exact match | 247 contacts → |
“BSI Engineering is a full-service engineering consulting firm dedicated to delivering innovative, efficient, and effective solutions across various industries.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Burkes Mechanical, INCburkesmechanical.com HQ: Brent, AL, United StatesReported employees: 201-500 | Brent, AL, United States | 201-500 | Exact match | 222 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | Waldemar S. Nelson & Co., INCwsnelson.com HQ: New Orleans, LA, United StatesReported employees: 201-500 | New Orleans, LA, United States | 201-500 | Exact match | 220 contacts → |
“For over a half century our professional staff - in meeting technical, schedule, budget, and regulatory requirements - has successfully completed projects in the U.S.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Chemical plant engineering firms: dataset insights
October 9, 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
951 records in the displayed employee bands.
1 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 952 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: October 9, 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 ↗
Chemical plant engineering firms by metro
Questions about this company list
What does Exact match mean for chemical plant engineering firms?
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 chemical plant engineering firms did RevenueBase find based in the United States?
The saved snapshot records 952 matching company records, 41,582 tracked contacts and 11,402 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: October 9, 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
Chemical plant engineering firms by geography
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India
- Chemical plant engineering firms based in Thane, India
- Chemical plant engineering firms based in Vadodara, India
- Chemical plant engineering firms based in Tehran, Iran
- Chemical plant engineering firms based in Milan, Italy
- Chemical plant engineering firms based in Singapore, Singapore
- Chemical plant engineering firms based in Madrid, Spain
Cite this list
RevenueBase Data Team. Top 25 chemical plant engineering firms based in the United States. Snapshot: October 9, 2026. https://revenuebase.ai/companies/chemical-plant-engineering-firms/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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- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India