Company lists · Data refreshed September 2026

Top 25 Chemical engineering companies based in the United States

Name: Chemical engineering companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 346 companies tracked

This directory lists 346 chemical engineering companies based in the United States, with contact coverage including 11,930 contacts and 3,469 email addresses. The list was updated in September 2026, and Houston is the single most-represented city among the companies listed. Use it to identify potential engineering, design, consulting, and project delivery partners.

Chemical engineering companies apply chemistry, physics, biology, and process engineering to design, improve, and manage systems that produce, transform, or handle chemicals, materials, fuels, food, pharmaceuticals, and related products. This list covers companies that provide chemical engineering design, consulting, process development, plant engineering, technical services, or related project support. Ranked by team size, largest first. Data current as of September 6, 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 6, 2026 86% judged on-target in blind review

346Companies

11,930Contacts tracked

3,469Verified emails

4,545Mobile numbers

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The 25 largest chemical engineering companies based in the United States

Ranked by team size

Top 25 of 346 chemical engineering companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to chemical engineering companies: 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	Tetra Technologies, INC	Indirect evidence	Spring, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,332 contacts →
	Indirect evidence “Founded in 1981, TETRA continues to apply its 40+ years of expertise in fluids chemistry to forge the pathway to future success while remaining the ONE trusted leader in the…” Source: RevenueBase Database · checked Sep 6, 2026
2	Ingenero	Partial evidence	Houston, TX, United StatesHQ checked Sep 6, 2026	501-1,000	532 contacts →
	Partial evidence “Ingenero's goal is to be the best process engineering firm by delivering the highest quality service and software solutions at the lowest cost.” Source: RevenueBase Database · checked Sep 6, 2026
3	The Vincit Group	Partial evidence	Chattanooga, TN, United StatesHQ checked Sep 6, 2026	5,001-10,000	476 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026
4	Recon Management Services, INC	Partial evidence	Sulphur, LA, United StatesHQ checked Sep 6, 2026	501-1,000	420 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026
5	C&i Engineering	Strong evidence	Louisville, KY, United StatesHQ checked Sep 6, 2026	201-500	313 contacts →
	Strong 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 6, 2026
6	Fateh Group	Indirect evidence	Cherryfield, ME, United StatesHQ checked Sep 6, 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 6, 2026
7	BSI Engineering	Partial evidence	Mason, OH, United StatesHQ checked Sep 6, 2026	201-500	247 contacts →
	Partial evidence “BSI Engineering is a full-service engineering consulting firm dedicated to delivering innovative, efficient, and effective solutions across various industries.” Source: RevenueBase Database · checked Sep 6, 2026
8	Chemtex	Partial evidence	Wilmington, NC, United StatesHQ checked Sep 6, 2026	201-500	230 contacts →
	Partial evidence “Chemtex is a global engineering and technology company.” Source: RevenueBase Database · checked Sep 6, 2026
9	GFS Chemicals	Partial evidence	Powell, OH, United StatesHQ checked Sep 6, 2026	51-200	195 contacts →
	Partial evidence “We don’t just make chemicals.” Source: RevenueBase Database · checked Sep 6, 2026
10	Elessent Clean Technologies	Partial evidence	St. Louis, MO, United StatesHQ checked Sep 6, 2026	201-500	189 contacts →
	Partial evidence “Elessent Clean Technologies is a global leader in process technologies to drive sustainability and carbon neutrality in the metals, fertilizer, chemicals and oil refining…” Source: RevenueBase Database · checked Sep 6, 2026
11	Sigma Engineers And Constructors	Partial evidence	Baton Rouge, United StatesHQ checked Sep 6, 2026	51-200	186 contacts →
	Partial evidence “Sigma Engineers and Constructors (SEC) is a professional engineering firm that provides specifically tailored services to meet the needs of North America's oil, gas, and…” Source: RevenueBase Database · checked Sep 6, 2026
12	GRSA	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 6, 2026	51-200	151 contacts →
	Partial evidence “GRSA is a full service professional engineering company providing process and detailed engineering services for a broad range of upstream, midstream, and downstream petrochemical…” Source: RevenueBase Database · checked Sep 6, 2026
13	Sterling Specialty Chemicals	Partial evidence	Houston, TX, United StatesHQ checked Sep 6, 2026	201-500	144 contacts →
	Partial evidence “Sterling Specialty Chemicals pushes the boundaries in chemical solutions, redefining the way the world extracts energy.” Source: RevenueBase Database · checked Sep 6, 2026
14	Penta Engineering Corporation	Partial evidence	St. Louis, MO, United StatesHQ checked Sep 6, 2026	51-200	118 contacts →
	Partial evidence “PENTA Engineering Corporation is an international, multidisciplinary firm providing comprehensive consulting and design/build solutions to the cement, lime, industrial minerals…” Source: RevenueBase Database · checked Sep 6, 2026
15	Southern Ionics Incorporated	Partial evidence	West Point, MS, United StatesHQ checked Sep 6, 2026	201-500	111 contacts →
	Partial evidence “Southern Ionics is a family owned and operated business specializing in chemical manufacturing and delivery.” Source: RevenueBase Database · checked Sep 6, 2026
16	Chemic Engineers & Constructors, INC	Strong evidence	Dickinson, TX, United StatesHQ checked Sep 6, 2026	51-200	106 contacts →
	Strong evidence “Chemic is a multi-discipline, project centric, engineering design, procurement, and construction management firm with a focus on employee and client success.” Source: RevenueBase Database · checked Sep 6, 2026
17	Koch Modular	Partial evidence	Paramus, NJ, United StatesHQ checked Sep 6, 2026	51-200	99 contacts →
	Partial evidence “Koch Modular Process Systems, LLC (Koch Modular) specializes in the design and supply of modular process systems for the worldwide Chemical Processing Industry.” Source: RevenueBase Database · checked Sep 6, 2026
18	Javan Engineering	Strong evidence	Fort Washington, PA, United StatesHQ checked Sep 6, 2026	201-500	99 contacts →
	Strong evidence “Javan Engineering is a full service consulting engineering design firm serving a highly regarded roster of clients in the Industrial/Chemical, Pharmaceutical/Biotech and…” Source: RevenueBase Database · checked Sep 6, 2026
19	Select Engineering INC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 6, 2026	51-200	95 contacts →
	Partial evidence “Select Engineering, Inc, is a privately-held company with offices in Tulsa,OK and Houston,TX.” Source: RevenueBase Database · checked Sep 6, 2026
20	Cdmg Engineering	Indirect evidence	Canonsburg, PA, United StatesHQ checked Sep 6, 2026	51-200	87 contacts →
	Indirect evidence “INDUSTRIAL STRENGTH TAILORED TO YOUR NEEDS.” Source: RevenueBase Database · checked Sep 6, 2026
21	Megi Engineering	Partial evidence	Lake Oswego, OR, United StatesHQ checked Sep 6, 2026	51-200	86 contacts →
	Partial evidence “MEGI Engineering Inc.” Source: RevenueBase Database · checked Sep 6, 2026
22	Chemstress	Indirect evidence	Akron, OH, United StatesHQ checked Sep 6, 2026	51-200	81 contacts →
	Indirect evidence “Why Chemstress?” Source: RevenueBase Database · checked Sep 6, 2026
23	Quality Execution INC	Partial evidence	Mount Vernon, IN, United StatesHQ checked Sep 6, 2026	51-200	76 contacts →
	Partial evidence “Quality Execution, Inc.(QualEx) is a full-service, multi-disciplined engineering, procurement and construction management firm with our main office located in Mt.” Source: RevenueBase Database · checked Sep 6, 2026
24	Process Combustion Corporation PCC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 6, 2026	11-50	75 contacts →
	Indirect evidence “PCC’s mission is to apply our know-how with confidence to design, supply and service high-tech, energy-efficient, dependable combustion and pollution control systems that provide…” Source: RevenueBase Database · checked Sep 6, 2026
25	Lauren Engineers & Constructors, INC	Indirect evidence	Abilene, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	72 contacts →
	Indirect evidence “Our story begins in 1984 when Lauren Engineers & Constructors, Inc, first opened its doors in Atlanta, Georgia.” Source: RevenueBase Database · checked Sep 6, 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 engineering companies. 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 engineering companies.
Partial evidence: Its own public description names part of chemical engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name chemical engineering companies. 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 346 chemical engineering companies based in the United States

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Chemical engineering companies based in the United States at a glance

As of Sep 6, 2026

29.1%Verified-email coverage

38.1%Mobile-number coverage

34.5Average contacts per company

11-50Median size (employees)

15.6%Largest-city concentration · Houston

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

141

11-50

114

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

3,2200–30

23331–60

261–90

490–180

10180+

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 engineering companies, 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 engineering companies”. 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 engineering companies), 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 engineering companies, 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, 3,469 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 6, 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 engineering companies by metro

Chemical engineering companies in Houston54

Frequently asked

How many chemical engineering companies are in the directory?

The directory contains 346 chemical engineering companies based in the United States.

What services do chemical engineering companies provide?

Chemical engineering companies provide services such as process design, plant engineering, feasibility studies, process development, safety analysis, commissioning, and technical consulting.

Which city has the most chemical engineering companies in the directory?

Houston is the single most-represented city among the chemical engineering companies in the directory.

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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.