Company lists · Data refreshed October 2026

Top 25 Chemical plant engineering firms based in Houston, United States

RevenueBase identified 113 company matches for chemical plant engineering firms associated with Houston, United States as of October 2026 and tracks 8,814 professional contacts across them, including 1,069 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for chemical plant engineering firms associated with Houston, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 9, 2026 How this list was built
113Companies
8,814Contacts tracked
1,069Verified emails
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The 25 largest chemical plant engineering firms based in Houston, United States

Ranked by team size
Top 25 of 113 company matches for chemical plant engineering firms based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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 matchHouston, TX, United StatesHQ recorded Oct 9, 20265,001-10,0003,615 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
2Exact matchHouston, TX, United StatesHQ recorded Oct 9, 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 9, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Oct 9, 2026n/a545 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Oct 9, 2026201-500139 contacts →

Exact match

“We, Pyramid E&C provide Modular, Digital and Sustainable Hydrocarbon processing solutions from last 25 years and have executed more than 700 projects worldwide.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202651-20091 contacts →

Exact match

“ZymeFlow® is the global leader in chemical decontamination of process equipment in refinery, petrochemical, gas, and specialty markets.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202651-20055 contacts →

Exact match

“BD Energy Systems LLC located in Houston, TX, USA is a world leading engineering company operating in the Petrochemical, Fertilizer, Refining, and Gas Processing industry…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202611-5049 contacts →

Exact match

“For over 35 years, Crystaphase has provided reactor solutions to hundreds of refining, petrochemical, and chemical plants worldwide.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202611-5045 contacts →

Exact match

“Who We Are TKE was founded in Houston, Texas in 1992 by Terry Eleiott, PE and his wife Kathy Eleiott.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202651-20043 contacts →

Exact match

“Riteks is a leading industrial chemical supplier for specialty applications used in oilfields, construction, protective coatings, and custom chemical manufacturing.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Oct 9, 2026201-50038 contacts →

Exact match

“Athlon, a Halliburton Service, provides specialty water and process treatment chemicals, customized engineering solutions, and services to the industrial sector, including the…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Oct 9, 2026201-50028 contacts →

Exact match

“Provider of Construction and Construction Management services to meet our client's needs.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202651-20026 contacts →

Exact match

“IHI Energy Solutions, a group company of IHI Corporation, creates value for our planet, clients and stakeholders by offering Engineering, Procurement and Project Management…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202611-5020 contacts →

Exact match

“Ascent Engineering, Inc.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202611-5019 contacts →

Exact match

“Calcgen Solutions believes in quality engineering service delivery to our clients.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202611-5014 contacts →

Exact match

“SSP Engineering & Consulting is a consulting firm based in the Houston Metropolitan area.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202611-5011 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Oct 9, 2026201-50011 contacts →

Exact match

“Datacor, formerly Chemstations, provides chemical process simulation software that enables chemical engineers to model and optimize processes, improve safety, and increase…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Oct 9, 20261-109 contacts →

Exact match

“Kalluri Group, Inc.(KGI) is a consulting engineering company specializing in the design of Water and Wastewater Treatment Plants for refineries, petrochemical plants…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202611-508 contacts →

Exact match

“Founded in January 2008, Engineering & Terminal Services, L.P.(E & TS) is a Consulting Engineering Company committed to providing the petrochemical industry with practical…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20Exact matchHouston, United StatesHQ recorded Oct 9, 202611-508 contacts →

Exact match

“EPCON’s mission is Ingenuity Simplified - we develop process engineering software that enables plant based engineers to make a significant difference in their company and in their…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Oct 9, 20261-107 contacts →

Exact match

“Catmasters LLC was formed in 2019 by a team of engineers from leading engineering roles within top tier global technology providers to oil refineries, gas, petrochemical and…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Oct 9, 20261-107 contacts →

Exact match

“At Siege Engineering, we excel in advancing chemical manufacturing technologies, allowing us to ensure safety, lower costs, and faster, reliable outcomes.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Oct 9, 202611-507 contacts →

Exact match

“Athena Energy offers experienced engineering, high quality performance chemicals and specialty products for Oil and Gas and Sustainable Energy Services.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24Exact matchHouston, TX, United StatesHQ recorded Oct 9, 20261-107 contacts →

Exact match

“Maxoil’s core abilities are in improving production efficiency and providing overall operations assurance strategies that achieve increased productivity with reliability.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Oct 9, 20261-106 contacts →

Exact match

“Our Mission is to support the transition of the petrochemical and plastics industries from hydrocarbon-based businesses to renewable, carbon-neutral businesses through the…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

Showing 25 of 113 chemical plant engineering firms based in Houston, United States

See the full list, filter by size, metro and specialty, and access 1,069 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Chemical plant engineering firms based in Houston, United States at a glance

As of Oct 9, 2026
12.1%Verified-email coverage
78.0Average contacts per company
11-50Median size (employees)
Oct 9, 2026Page data refreshed

Companies by employee count

1-10
41
11-50
36
51-200
21
201-500
9
501-1,000
3
5,001-10,000
2
10001+
1

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 113 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 Houston, 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 1,069 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.

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 Houston, United States?

RevenueBase identified 113 company matches for chemical plant engineering firms associated with Houston, 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?

S&b tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most chemical plant engineering firms?

Houston leads the United States 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 1,069 professional contacts with verified work emails tracked across these 113 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.

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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 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.