Company lists · Data refreshed September 2026

Top 25 Refinery maintenance contractors based in the Netherlands

Name: Refinery maintenance contractors based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 66 companies tracked

RevenueBase identified 66 refinery maintenance contractors headquartered in the Netherlands as of September 2026 and tracks 5,383 professional contacts across them, including 446 with verified work emails. Rotterdam is the largest hub.

This list covers refinery maintenance contractors headquartered in the Netherlands, 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 17, 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 17, 2026 86% judged on-target in blind review

66Companies

5,383Contacts tracked

446Verified emails

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The 25 largest refinery maintenance contractors based in the Netherlands

Ranked by team size

Top 25 of 66 refinery maintenance contractors based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to refinery maintenance contractors: 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	STORK	Partial evidence	Utrecht, NetherlandsHQ checked Sep 17, 2026	10001+	4,073 contacts →
	Partial evidence “Stork is a global provider of integrated operations, maintenance, modification and asset integrity solutions.” Source: RevenueBase Database · checked Sep 17, 2026
2	Verwater Group B.V	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	353 contacts →
	Indirect evidence “Verwater breathes Tank & Industrial Services.” Source: RevenueBase Database · checked Sep 17, 2026
3	Petrodec	Partial evidence	Spicalaan 13 2132 Jg Hoofddorp the Netherlands, NetherlandsHQ checked Sep 17, 2026	51-200	168 contacts →
	Partial evidence “Petrodec is a responsible offshore contractor, ready to deliver safe, efficient and innovative decommissioning or re-use solutions.” Source: RevenueBase Database · checked Sep 17, 2026
4	Stork Benelux	Indirect evidence	Utrecht, NetherlandsHQ checked Sep 17, 2026	n/a	79 contacts →
	Indirect evidence “Stork, sinds april 2024 onderdeel van Bilfinger, levert diensten op het terrein van constructie, onderhoud, modificaties en borging van de integriteit van assets, voor klanten in…” Source: RevenueBase Database · checked Sep 17, 2026
5	WFR Oilfield Services B.V	Indirect evidence	Schoonebeek, NetherlandsHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “WFR is a full range service provider to the oil & gas and energy industries.” Source: RevenueBase Database · checked Sep 17, 2026
6	Intures	Partial evidence	Velsen Noord, NetherlandsHQ checked Sep 17, 2026	51-200	45 contacts →
	Partial evidence “Intures is an independent engineering firm specializing in life-extending maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
7	Hsos Industrial Services	Indirect evidence	Dordrecht, NetherlandsHQ checked Sep 17, 2026	11-50	44 contacts →
	Indirect evidence “HSOS Industrial Services BV is founded in january 2007 HSOS Industrial Services is ISO 9001:2015-ISO 45001:2018-VCA-P 2017/6.0 certificated and we work worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
8	KIS CNC Services	Partial evidence	NetherlandsHQ checked Sep 17, 2026	51-200	40 contacts →
	Partial evidence “KIS CNC Services is a leading industrial maintenance specialist in The Netherlands, with state-of-the-art repair shops in Hengelo, Rotterdam and Nederweert.” Source: RevenueBase Database · checked Sep 17, 2026
9	Tacon Group	Indirect evidence	Sittard, NetherlandsHQ checked Sep 17, 2026	51-200	37 contacts →
	Indirect evidence “Tacon Group is een onafhankelijke, multidisciplinaire dienstverlener in de energie, gas-(petro-) chemie, proces industrie, farmaceutica en infra projecten.” Source: RevenueBase Database · checked Sep 17, 2026
10	Roodhart Group	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	32 contacts →
	Indirect evidence “Roodhart Group – The sure standard Pivotal to the systems and services of Roodhart Group is the high quality of our work and our unparalleled expertise.” Source: RevenueBase Database · checked Sep 17, 2026
11	Rotary Industry Group	Indirect evidence	Brielle, NetherlandsHQ checked Sep 17, 2026	51-200	25 contacts →
	Indirect evidence “Rotary Equipment Service in Brielle (founded 1976) is a reliable partner concerning the repair and revision of rotating equipment such as pumps, mixers and turbines.” Source: RevenueBase Database · checked Sep 17, 2026
12	Runwell Energy Services	Partial evidence	Emmen, NetherlandsHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “We are a company in the petrochemical and geothermal industry who is specialized in the maintenance and re-certification of equipment used in these industries such as- High…” Source: RevenueBase Database · checked Sep 17, 2026
13	Ipco B.V	Indirect evidence	Dordrecht, NetherlandsHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “E info@ipco.nl - T +31(0)78 65 21 - W Bent u op zoek naar producten voor het verbinden, onderhouden, repareren, reinigen, uitbreiden, testen en aanleggen van pijpleidingen…” Source: RevenueBase Database · checked Sep 17, 2026
14	Vector MM	Indirect evidence	Den Helder, NetherlandsHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Vector MM is a boutique consultancy company consisting of about 15 highly educated and trained engineers.” Source: RevenueBase Database · checked Sep 17, 2026
15	Human Industries	Partial evidence	Hellevoetsluis, NetherlandsHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “Human Industries specializes in preventive maintenance and overhaul of rotating equipment, including: compressors, steam turbines, pumps and other rotating equipment.” Source: RevenueBase Database · checked Sep 17, 2026
16	VAN DER Mark Ketelonderhoud	Partial evidence	De Lier, NetherlandsHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “Van der Mark - Ketelonderhoud, afsluiters, veiligheden appendages onderhoud en revisie Van der Mark - Boiler services, valve maintenance repair and overhaul” Source: RevenueBase Database · checked Sep 17, 2026
17	ECLON	Partial evidence	Ruurlo, NetherlandsHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “ECLON Projects: industrial services such as installation and maintenance of gasturbines, steamturbines and compressors.” Source: RevenueBase Database · checked Sep 17, 2026
18	Bobach Service Nederland B.V	Indirect evidence	Velsen-noord, NetherlandsHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
19	ROA Services	Indirect evidence	Etten-leur, NetherlandsHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “We take care of all your Chemical Cleaning, Decontamination, on-site Waste treatment and temporary process Equipment Projects.” Source: RevenueBase Database · checked Sep 17, 2026
20	Pneumix Injection Units BV	Partial evidence	Son, NetherlandsHQ checked Sep 17, 2026	1-10	4 contacts →
	Partial evidence “Pneumix is a full-service independent development and production company of bulk handling equipment for FCC refinery plants.” Source: RevenueBase Database · checked Sep 17, 2026
21	Hyreco BV	Indirect evidence	Sintjohannesga, NetherlandsHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “Reviseren, verkopen, repareren, verhuren en onderhouden van hydraulische uitrustingstukken en machines.” Source: RevenueBase Database · checked Sep 17, 2026
22	Diflicom	Indirect evidence	Dordrecht, NetherlandsHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “DIFLICOM is the specialist for replacing and installing new and existing piping operating in the (petrochemical) industry and transhipment.” Source: RevenueBase Database · checked Sep 17, 2026
23	Indus3 B.V	Indirect evidence	Hellevoetsluis, NetherlandsHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “InduS3 is a dynamic and customer-oriented company that specializes in a wide range of activities in turnarounds, new constructions/installations, cleaning and process improvement…” Source: RevenueBase Database · checked Sep 17, 2026
24	Refinery Service Technology BV	Indirect evidence	Hilversum, NetherlandsHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “Our Mission: To guarantee that all aspects of a catalyst change-out are executed to the highest possible standards with respect to quality, efficiency and most important, safety.” Source: RevenueBase Database · checked Sep 17, 2026
25	Contax Technical Support	Indirect evidence	Schiedam, NetherlandsHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “Contax Technical Support started in 1998 as a welding company and provision technical support in the oil, gas, offshore and maritime industry and has be specialized in providing…” Source: RevenueBase Database · checked Sep 17, 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: refinery maintenance contractors. 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 refinery maintenance contractors.
Partial evidence: Its own public description names part of refinery maintenance contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name refinery maintenance contractors. 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 66 refinery maintenance contractors based in the Netherlands

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Refinery maintenance contractors based in the Netherlands at a glance

As of Sep 17, 2026

8.3%Verified-email coverage

81.6Average contacts per company

1-10Median size (employees)

6.1%Largest-city concentration · Rotterdam

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 66 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 refinery maintenance contractors, 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 Netherlands whose own description of what they do matches “refinery maintenance contractors”. 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 refinery maintenance contractors), 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 refinery maintenance contractors, and records with no verified work email. Companies headquartered outside Netherlands 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, 446 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 17, 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.

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 refinery maintenance contractors, 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 refinery maintenance contractors are there based in the Netherlands?

RevenueBase identified 66 refinery maintenance contractors headquartered in the Netherlands 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?

STORK, headquartered in Utrecht, tops this list with the largest team on record.

Which city has the most refinery maintenance contractors?

Rotterdam leads with 4 headquartered companies, followed by Dordrecht (3) and Utrecht (3).

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 446 verified decision-maker contacts tracked across these 66 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 17, 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.