Company lists · Data refreshed September 2026

Top 25 Chemical processing plant builders based in the United States

Name: Chemical processing plant builders based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 467 companies tracked

RevenueBase identified 467 chemical processing plant builders headquartered in the United States as of September 2026 and tracks 69,847 professional contacts across them, including 17,847 with verified work emails. Houston is the largest hub.

This list covers chemical processing plant builders headquartered in the United States, 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 16, 2026.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

467Companies

69,847Contacts tracked

17,847Verified emails

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The 25 largest chemical processing plant builders based in the United States

Ranked by team size

Top 25 of 467 chemical processing plant builders based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to chemical processing plant builders: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Fluor Corporation	Indirect evidence	Irving, TX, United StatesHQ checked Sep 16, 2026	10001+	33,084 contacts →
	Indirect evidence “Fluor Corporation is a global engineering, procurement and construction company.” Source: RevenueBase Database · checked Sep 16, 2026
2	Zachry Group	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 16, 2026	10001+	6,824 contacts →
	Partial evidence “Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…” Source: RevenueBase Database · checked Sep 16, 2026
3	S&b	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	5,001-10,000	3,510 contacts →
	Indirect evidence “S&B is an engineer and constructor that designs and builds some of the largest and most complex industrial facilities in the world.” Source: RevenueBase Database · checked Sep 16, 2026
4	The Haskell Company	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…” Source: RevenueBase Database · checked Sep 16, 2026
5	Hargrove Engineers & Constructors	Indirect evidence	Mobile, AL, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,877 contacts →
	Indirect evidence “Hargrove is a full-service engineering, procurement, and construction management firm delivering multi-discipline engineering, project delivery, controls & automation, and…” Source: RevenueBase Database · checked Sep 16, 2026
6	Audubon Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,488 contacts →
	Indirect evidence “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Source: RevenueBase Database · checked Sep 16, 2026
7	Saulsbury	Indirect evidence	Odessa, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,130 contacts →
	Indirect evidence “Saulsbury Industries is a full-service Engineering Procurement and Construction (EPC) contractor that provides engineering, general construction, electrical & instrumentation…” Source: RevenueBase Database · checked Sep 16, 2026
8	Bmwc Constructors	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 16, 2026	1,001-5,000	558 contacts →
	Indirect evidence “BMWC tackles the world’s toughest, most daunting industrial construction challenges.” Source: RevenueBase Database · checked Sep 16, 2026
9	Arb, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	528 contacts →
	Indirect evidence “ARB Inc.” Source: RevenueBase Database · checked Sep 16, 2026
10	Richard	Indirect evidence	Beaumont, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	501 contacts →
	Indirect evidence “RICHARD is a full-service engineering, procurement and construction firm in the petrochemical and refining industry.” Source: RevenueBase Database · checked Sep 16, 2026
11	Matrix Service	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 16, 2026	1,001-5,000	492 contacts →
	Indirect evidence “Matrix Service is a subsidiary of Matrix Service Company (NASDAQ: MTRX).” Source: RevenueBase Database · checked Sep 16, 2026
12	Campos EPC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 16, 2026	501-1,000	471 contacts →
	Indirect evidence “Campos EPC (CEPC) is headquartered in Denver, Colorado with offices covering all regions of the United States.” Source: RevenueBase Database · checked Sep 16, 2026
13	Scmi INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	n/a	470 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
14	Jedson Engineering	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 16, 2026	501-1,000	459 contacts →
	Indirect evidence “Jedson Engineering is a privately owned, integrated engineering, procurement, and construction management (EPCm) company that delivers projects that improve profitability.” Source: RevenueBase Database · checked Sep 16, 2026
15	Delta Constructors	Partial evidence	Anchorage, AK, United StatesHQ checked Sep 16, 2026	501-1,000	380 contacts →
	Partial evidence “We are a full-service construction and fabrication group serving industrial clients of all sizes in water, wastewater, petroleum, gas processing and energy projects.” Source: RevenueBase Database · checked Sep 16, 2026
16	Burrow Global, LLC	Indirect evidence	Beaumont, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	375 contacts →
	Indirect evidence “Burrow Global, LLC is a full service engineering, procurement, construction, and facility services firm with specialties in process automation, industrial buildings/architecture…” Source: RevenueBase Database · checked Sep 16, 2026
17	ITAC	Indirect evidence	Chester, VA, United StatesHQ checked Sep 16, 2026	501-1,000	365 contacts →
	Indirect evidence “100% EMPLOYEE OWNED!” Source: RevenueBase Database · checked Sep 16, 2026
18	Lauren Services INC	Partial evidence	Abilene, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	353 contacts →
	Partial evidence “Lauren provides engineering, procurement and construction services throughout a variety of heavy-industrial markets, including Power Generation, Chemical/Process and Oil and Gas.” Source: RevenueBase Database · checked Sep 16, 2026
19	C&i Engineering	Partial evidence	Louisville, KY, United StatesHQ checked Sep 16, 2026	201-500	313 contacts →
	Partial evidence “Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Source: RevenueBase Database · checked Sep 16, 2026
20	The Roberts Company	Indirect evidence	Winterville, NC, United StatesHQ checked Sep 16, 2026	501-1,000	305 contacts →
	Indirect evidence “Founded in 1977 as The Roberts Company, Roberts has grown from a small contractor to a large full service constructor and fabricator.” Source: RevenueBase Database · checked Sep 16, 2026
21	Samuel Engineering, INC	Indirect evidence	Greenwood Village, CO, United StatesHQ checked Sep 16, 2026	201-500	293 contacts →
	Indirect evidence “Samuel is a multi-discipline engineering, procurement, fabrication, and construction company.” Source: RevenueBase Database · checked Sep 16, 2026
22	Fateh Group	Indirect evidence	Cherryfield, ME, United StatesHQ checked Sep 16, 2026	1,001-5,000	277 contacts →
	Indirect evidence “FATEH GROUP is committed to provide its customers with high-quality services and products.” Source: RevenueBase Database · checked Sep 16, 2026
23	MECS	Partial evidence	Chesterfield, MO, United StatesHQ checked Sep 16, 2026	201-500	273 contacts →
	Partial evidence “MECS is the global leader in sulfuric acid process technology and related high performance products custom engineered for acid plant production environments.” Source: RevenueBase Database · checked Sep 16, 2026
24	Nexus Engineering Group	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 16, 2026	201-500	255 contacts →
	Indirect evidence “Nexus Engineering Group is a full-service engineering, procurement, and construction management (EPCm) firm headquartered in Cleveland, Ohio with offices in Toledo, Ohio, Midland…” Source: RevenueBase Database · checked Sep 16, 2026
25	H M Industrial EPC	Partial evidence	Pasadena, TX, United StatesHQ checked Sep 16, 2026	501-1,000	244 contacts →
	Partial evidence “H+M Industrial EPC has provided end-to-end capital project solutions to the Energy and Chemicals industries since 1988.” Source: RevenueBase Database · checked Sep 16, 2026

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: chemical processing plant builders. 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 chemical processing plant builders.
Partial evidence: Its own public description names part of chemical processing plant builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name chemical processing plant builders. 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 467 chemical processing plant builders based in the United States

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Chemical processing plant builders based in the United States at a glance

As of Sep 16, 2026

25.6%Verified-email coverage

149.6Average contacts per company

11-50Median size (employees)

10.9%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

102

11-50

158

51-200

121

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 467 companies.

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 chemical processing plant builders, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “chemical processing plant builders”. 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 chemical processing plant builders), 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 chemical processing plant builders, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 17,847 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 16, 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.

Chemical processing plant builders by metro

Chemical processing plant builders in Houston51

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 chemical processing plant builders, 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 chemical processing plant builders are there based in the United States?

RevenueBase identified 467 chemical processing plant builders headquartered in the United States 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?

Fluor Corporation, headquartered in Irving, tops this list with the largest team on record.

Which city has the most chemical processing plant builders?

Houston leads with 51 headquartered companies, followed by Tulsa (9) and Baton Rouge (8).

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 17,847 verified decision-maker contacts tracked across these 467 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 16, 2026.

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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.