Company lists · Data refreshed October 2026

Top 25 Chemical plant maintenance companies based in Canada

Name: Chemical plant maintenance companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 63 companies tracked

RevenueBase identified 63 company matches for chemical plant maintenance companies associated with Canada as of October 2026 and tracks 1,173 professional contacts across them, including 248 with verified work emails. Calgary is the largest hub.

This list covers company matches for chemical plant maintenance companies associated with Canada, 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

63Companies

1,173Contacts tracked

248Verified emails

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The 25 largest chemical plant maintenance companies based in Canada

Ranked by team size

Top 25 of 63 company matches for chemical plant maintenance companies based in Canada, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Melloy Industrial Services INC	Exact match	Nisku, AB, CanadaHQ recorded Oct 9, 2026	51-200	211 contacts →
	Exact match “Melloy Industrial is a trusted leader in heavy industrial maintenance, turnarounds, project execution and fabrication services across Canada.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	OTS LTD	Exact match	Sydney, NS, CanadaHQ recorded Oct 9, 2026	201-500	137 contacts →
	Exact match “OUR COMPANY OTS is a leader in the industrial service industry, specializing in Pre-Commissioning, Commissioning and Start-Up services and Operations and Maintenance.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	SCG Process	Exact match	Langley, BC, CanadaHQ recorded Oct 9, 2026	51-200	59 contacts →
	Exact match “At SCG Process we harness the power of our collective of specialists; people committed to helping our clients become the stewards of their gas and fluid process performance across…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Catalyst Changers INC	Exact match	Sundre, AB, CanadaHQ recorded Oct 9, 2026	51-200	51 contacts →
	Exact match “Catalyst Changers has become a recognized go-to source for the Oil, Gas and Petro-chemical Industry when they need dependable Catalyst Changeover and Shutdown Maintenance Services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	BIG Erics	Exact match	St John’s, NL, CanadaHQ recorded Oct 9, 2026	51-200	50 contacts →
	Exact match “With retail and commercial service locations in Halifax and St.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Mader Group Canada	Exact match	Calgary, AB, CanadaHQ recorded Oct 9, 2026	51-200	47 contacts →
	Exact match “Mader are heavy equipment maintenance experts delivering quality repairs, preventative maintenance and expert diagnostics.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Fluordriver	Exact match	Edmonton, AB, CanadaHQ recorded Oct 9, 2026	501-1,000	26 contacts →
	Exact match “Fluor Driver is a recognized leader in plant maintenance, turnarounds, small capital – and particularly safety – across Canada.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Controlchem Canada LTD	Exact match	Burlington, ON, CanadaHQ recorded Oct 9, 2026	11-50	19 contacts →
	Exact match “ControlChem Canada Limited is a progressive and growing company dedicated to delivering high quality water treatment solutions.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Chem Action INC	Exact match	Montreal, QC, CanadaHQ recorded Oct 9, 2026	11-50	14 contacts →
	Exact match “Chem Action Inc is a mechanical or industrial engineering company based out of 4559 boul metropolitain est, Montreal, Quebec, Canada.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	Element Process And Controls LTD	Exact match	Wood Buffalo, BC, CanadaHQ recorded Oct 9, 2026	51-200	13 contacts →
	Exact match “At Element Controls, we specialize in delivering innovative and efficient solutions for the industrial sector, with expertise in maintenance, instrumentation, and operations.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Advancing Chemistry INC ACI	Exact match	Calgary, AB, CanadaHQ recorded Oct 9, 2026	11-50	11 contacts →
	Exact match “Advancing Chemistry Inc.(ACI) is a leading provider of high-performance chemical products and services for the Oil & Gas industry.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Sulfur Recovery Engineering	Exact match	Calgary, AB, CanadaHQ recorded Oct 9, 2026	11-50	9 contacts →
	Exact match “Since 1998, Refineries, Gas Plants, and Engineering companies worldwide have cut costs, reduced emissions, and achieved optimal performance of Sulfur Recovery Units with…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Can-Ak Industrial Services INC	Exact match	Fort Saskatchewan, AB, CanadaHQ recorded Oct 9, 2026	11-50	9 contacts →
	Exact match “CAN-AK provides the oil flushing and chemical cleaning turnkey services necessary to manage, monitor, and advance all phases of your plant’s equipment reliability objectives.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Rushton GAS And OIL Equipment LTD	Exact match	Edmonton, AB, CanadaHQ recorded Oct 9, 2026	51-200	9 contacts →
	Exact match “Rushton Gas and Oil Equipment Ltd specializes in providing engineering, design, fabrication and maintenance of Oil and Gas production plants.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	API Industrial Services INC	Exact match	Sturgeon County, AB, CanadaHQ recorded Oct 9, 2026	1-10	8 contacts →
	Exact match “We, API Industrial Services Inc, are a contractor based in the Industrial Heartland of Alberta who specializes in rotating equipment.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Compression Technology INC	Exact match	Fort St John, BC, CanadaHQ recorded Oct 9, 2026	11-50	8 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Kemko INC	Exact match	Calgary, AB, CanadaHQ recorded Oct 9, 2026	11-50	6 contacts →
	Exact match “Kemko provides a complete line of chemical products and solutions specifically engineered to meet the demands of the different segments of the oil and gas Industry.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Highmark Oilfield Services	Exact match	Charlie Lake, BC, CanadaHQ recorded Oct 9, 2026	11-50	5 contacts →
	Exact match “Highmark Oilfield Services Ltd.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	Groupe Axiomatech INC	Exact match	Laval, QC, CanadaHQ recorded Oct 9, 2026	11-50	4 contacts →
	Exact match “Maintenance.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Brodi Specialty Products LTD	Exact match	Markham, ON, CanadaHQ recorded Oct 9, 2026	11-50	4 contacts →
	Exact match “Brodi Specialty Products Ltd, founded in 1976, is a boutique specialty chemical company selling directly to the maintenance & engineering departments of institutional, industrial…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Prevent Mechanical LTD	Exact match	Calgary, AB, CanadaHQ recorded Oct 9, 2026	11-50	4 contacts →
	Exact match “Prevent Mechanical's corporate DNA is descended from one of Calgary's largest mechanical equipment manufacturer's representatives and the City's leading water treatment company.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Gestherm	Exact match	Québec, QC, CanadaHQ recorded Oct 9, 2026	1-10	3 contacts →
	Exact match “Gestherm offre des services spécialisés et qualifiés dans la surveillance périodique et la maintenance de centrales thermiques industrielles et commerciales.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Dalpro Technologies INC	Exact match	Hamilton, ON, CanadaHQ recorded Oct 9, 2026	11-50	3 contacts →
	Exact match “Since 1993, Dalpro has become a recognized leader in providing turnkey, cost-effective chemical cleaning services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	Optimatek Solutions	Exact match	L'ange-gardien, CanadaHQ recorded Oct 9, 2026	11-50	3 contacts →
	Exact match “Optimatek Solutions vous offre d’accompagner votre entreprise afin d’optimiser l’efficacité et le rendement de vos équipements et lignes d’assemblage.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Edgewater Industrial Services INC	Exact match	Severn Bridge, ON, CanadaHQ recorded Oct 9, 2026	1-10	2 contacts →
	Exact match Recorded description not available. 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 maintenance companies”. 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 63 chemical plant maintenance companies based in Canada

See the full list, filter by size, metro and specialty, and access 248 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Chemical plant maintenance companies based in Canada at a glance

As of Oct 9, 2026

21.1%Verified-email coverage

18.6Average contacts per company

11-50Median size (employees)

14.3%Largest-city concentration · Calgary

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 63 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 Canada whose business descriptions match “chemical plant maintenance companies” 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 248 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 maintenance companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many chemical plant maintenance companies are there based in Canada?

RevenueBase identified 63 company matches for chemical plant maintenance companies associated with Canada 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?

Melloy Industrial Services INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most chemical plant maintenance companies?

Calgary leads with 9 company records, followed by Edmonton (5) and Clairmont (3).

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 248 professional contacts with verified work emails tracked across these 63 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.