Company lists · Data refreshed September 2026

Top 25 Chemical plant consulting firms worldwide

Name: Chemical plant consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 9,604 companies tracked

RevenueBase identified 9,604 chemical plant consulting firms worldwide as of September 2026 and tracks 187,757 professional contacts across them, including 40,521 with verified work emails. The United States is the largest market and Tehran the largest hub.

This list covers chemical plant consulting firms worldwide, 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 27, 2026. Country and city lists for chemical plant consulting firms follow the table.

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 27, 2026 86% judged on-target in blind review

9,604Companies

187,757Contacts tracked

40,521Verified emails

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The 25 largest chemical plant consulting firms worldwide

Ranked by team size

Top 25 of 9,604 chemical plant consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to chemical plant consulting firms: 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	WOOD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 27, 2026	10001+	26,949 contacts →
	Partial evidence “Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.” Source: RevenueBase Database · checked Sep 27, 2026
2	Toyo Engineering Corporation	Partial evidence	Chiba-shi Mihama-ku, JapanHQ checked Sep 27, 2026	1,001-5,000	2,760 contacts →
	Partial evidence “Toyo Engineering is an engineering company that constructs the plant in a global stage centering on the plant engineering field.” Source: RevenueBase Database · checked Sep 27, 2026
3	Aarvi Encon	Indirect evidence	Mumbai, IndiaHQ checked Sep 27, 2026	5,001-10,000	1,890 contacts →
	Indirect evidence “Aarvi Encon has established it's leadership in providing Engineering Consultancy and Technical Assistance to Oil & Gas, Refinery, Petrochemical, Pipelines, Power & Infrastructure…” Source: RevenueBase Database · checked Sep 27, 2026
4	AYTB	Indirect evidence	Jubail Industrial City, Saudi ArabiaHQ checked Sep 27, 2026	5,001-10,000	1,812 contacts →
	Indirect evidence “AYTB had recognized the Saudi Dream 45 years ago when the Royal Commission for Jubail and Yanbu was set up with a vision to build a huge petrochemical industry to catapult Saudi…” Source: RevenueBase Database · checked Sep 27, 2026
5	AXENS	Indirect evidence	Rueil-malmaison, FranceHQ checked Sep 27, 2026	1,001-5,000	1,572 contacts →
	Indirect evidence “The Axens Group offers a complete range of solutions for the conversion of oil and biomass into cleaner fuels, the production and purification of major petrochemical…” Source: RevenueBase Database · checked Sep 27, 2026
6	Bilfinger Engineering	Partial evidence	Schiedam, NetherlandsHQ checked Sep 27, 2026	1,001-5,000	1,535 contacts →
	Partial evidence “Engineering for greenfield plants or modification and modernization projects for brownfield plants: Bilfinger delivers the optimized solution for our customers in terms of…” Source: RevenueBase Database · checked Sep 27, 2026
7	Chiyoda Corporation	Partial evidence	Yokohama, JapanHQ checked Sep 27, 2026	5,001-10,000	1,514 contacts →
	Partial evidence “Since its establishment in 1948, Chiyoda's business field has covered the energy sector such as oil and gas industry including energy conservation, and chemicals, environment…” Source: RevenueBase Database · checked Sep 27, 2026
8	EKIUM	Indirect evidence	Lyon Cedex 07, FranceHQ checked Sep 27, 2026	1,001-5,000	1,502 contacts →
	Indirect evidence “Welcome to Ekium!” Source: RevenueBase Database · checked Sep 27, 2026
9	Chemplast Sanmar Limited	Indirect evidence	IndiaHQ checked Sep 27, 2026	1,001-5,000	1,385 contacts →
	Indirect evidence “Chemplast Sanmar – fifty years old and the flagship company of The Sanmar Group – is a major manufacturer of PVC resins, Caustic Soda, Chlorochemicals, Refrigerant gas, Industrial…” Source: RevenueBase Database · checked Sep 27, 2026
10	Tkil Industries	Indirect evidence	Pune, IndiaHQ checked Sep 27, 2026	1,001-5,000	1,296 contacts →
	Indirect evidence “TKIL Industries Pvt.” Source: RevenueBase Database · checked Sep 27, 2026
11	Paul Wurth S.A	Indirect evidence	LuxembourgHQ checked Sep 27, 2026	201-500	1,156 contacts →
	Indirect evidence “Rooted and founded in Luxembourg more than a 150 years ago, Paul Wurth is a valued industrial engineering partner in the global ironmaking industry.” Source: RevenueBase Database · checked Sep 27, 2026
12	M. N. Dastur & Co. P LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	1,001-5,000	894 contacts →
	Indirect evidence “M.” Source: RevenueBase Database · checked Sep 27, 2026
13	Zeeco, INC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 27, 2026	1,001-5,000	883 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026
14	OIL Industries Commissioning And Operation Company Oico	Indirect evidence	Tehran, IranHQ checked Sep 27, 2026	1,001-5,000	869 contacts →
	Indirect evidence “Oil Industries’ Commissioning and Operation Company (OICO) is incorporated to manage and execute commissioning and start-up, operation, maintenance and professional training for…” Source: RevenueBase Database · checked Sep 27, 2026
15	Pares&alvarez	Partial evidence	Santiago, ChileHQ checked Sep 27, 2026	501-1,000	807 contacts →
	Partial evidence “We are Pares & Alvarez, our extensive experience and the recognition of our clients makes us one of the leading Engineering Companies in environmental, consulting, engineering and…” Source: RevenueBase Database · checked Sep 27, 2026
16	Parlym	Indirect evidence	Estaque, FranceHQ checked Sep 27, 2026	1,001-5,000	732 contacts →
	Indirect evidence “For over 50 years the Parlym Group has managed to establish itself as a major player in industrial engineering all over the world.” Source: RevenueBase Database · checked Sep 27, 2026
17	Sigma Industry	Indirect evidence	Stockholm, SwedenHQ checked Sep 27, 2026	1,001-5,000	688 contacts →
	Indirect evidence “Sigma Industry har tagit ett långsiktigt åtagande för att förnya konsultbranschen inom ingenjörstjänster.” Source: RevenueBase Database · checked Sep 27, 2026
18	Inerco	Indirect evidence	Sevilla, SpainHQ checked Sep 27, 2026	1,001-5,000	688 contacts →
	Indirect evidence “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Source: RevenueBase Database · checked Sep 27, 2026
19	VTU Group	Partial evidence	Grambach / Graz, AustriaHQ checked Sep 27, 2026	1,001-5,000	680 contacts →
	Partial evidence “VTU Group is an international technology and engineering service provider for the life sciences and chemical industries.” Source: RevenueBase Database · checked Sep 27, 2026
20	Fabtech Projects & Engineers LTD	Partial evidence	Pune, IndiaHQ checked Sep 27, 2026	501-1,000	659 contacts →
	Partial evidence “Fabtech Projects and Engineers Ltd is among the leaders in engineering procurement and construction (EPC) services to oil and gas, chemical and sugar industries in India.” Source: RevenueBase Database · checked Sep 27, 2026
21	KBR Granherne	Partial evidence	Leatherhead, United KingdomHQ checked Sep 27, 2026	501-1,000	648 contacts →
	Partial evidence “KBR Consulting is one of the world's foremost engineering consultancies specializing in the hydrocarbon and energy industry.” Source: RevenueBase Database · checked Sep 27, 2026
22	Sitech	Partial evidence	Geleen, NetherlandsHQ checked Sep 27, 2026	501-1,000	594 contacts →
	Partial evidence “To maximize results Sitech helps companies in the processing and chemical industries and companies in the energy sector to grow and develop further.” Source: RevenueBase Database · checked Sep 27, 2026
23	Applied Consultants	Indirect evidence	Longview, TX, United StatesHQ checked Sep 27, 2026	501-1,000	578 contacts →
	Indirect evidence “Since 1991, Applied Consultants Inc.” Source: RevenueBase Database · checked Sep 27, 2026
24	Elomatic	Partial evidence	Turku, FinlandHQ checked Sep 27, 2026	1,001-5,000	571 contacts →
	Partial evidence “Elomatic is an international consulting and engineering company that provides top-level expert services, products and turnkey solutions to process, machinery, marine, energy and…” Source: RevenueBase Database · checked Sep 27, 2026
25	Ingenero	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	501-1,000	532 contacts →
	Indirect 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 27, 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 plant consulting firms. 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 plant consulting firms.
Partial evidence: Its own public description names part of chemical plant consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name chemical plant consulting firms. 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 9,604 chemical plant consulting firms worldwide

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Chemical plant consulting firms worldwide at a glance

As of Sep 27, 2026

21.6%Verified-email coverage

19.5Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Tehran

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

4,587

11-50

3,057

51-200

1,322

201-500

365

501-1,000

126

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 plant consulting firms, 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.
Coverage: Every country. Country and city lists for chemical plant consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “chemical plant consulting firms”. 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 plant consulting firms), 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 plant consulting firms, and records with no verified work email.
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, 40,521 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 27, 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 plant consulting firms by location

38 lists · largest first

Every Chemical plant consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 plant consulting firms, 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 plant consulting firms are there worldwide?

RevenueBase identified 9,604 chemical plant consulting firms worldwide 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?

WOOD, headquartered in Aberdeen, tops this list with the largest team on record.

Which country has the most chemical plant consulting firms?

The United States leads with 1,212 companies, followed by India (1,052) and Brazil (771). Every chemical plant consulting firms list by country and city is linked on this page.

Which city has the most chemical plant consulting firms?

Tehran leads with 162 headquartered companies, followed by Houston (129) and Pune (117).

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 40,521 verified decision-maker contacts tracked across these 9,604 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 27, 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.