Company lists · Data refreshed September 2026

Top 25 Refinery maintenance contractors based in Italy

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 173 companies tracked

RevenueBase identified 173 refinery maintenance contractors headquartered in Italy as of September 2026 and tracks 2,725 professional contacts across them, including 533 with verified work emails. Priolo Gargallo is the largest hub.

This list covers refinery maintenance contractors headquartered in Italy, 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

173Companies

2,725Contacts tracked

533Verified emails

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The 25 largest refinery maintenance contractors based in Italy

Ranked by team size

Top 25 of 173 refinery maintenance contractors based in Italy, 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	Irem SPA	Partial evidence	Siracusa, ItalyHQ checked Sep 17, 2026	1,001-5,000	789 contacts →
	Partial evidence “IREM GROUP Provides complete services in the field of Procurement, Detail Engineering, Construction and Maintenance of Industrial Plants.” Source: RevenueBase Database · checked Sep 17, 2026
2	Sirio Solutions Engineering SPA SSE SPA	Indirect evidence	Prato, ItalyHQ checked Sep 17, 2026	201-500	159 contacts →
	Indirect evidence “Fox Innovation & Technologies (FOX), a leading provider of advanced technologies aftermarket services and solutions specialized in high-speed rotating equipment announced in May…” Source: RevenueBase Database · checked Sep 17, 2026
3	RAM Energy E&c S.R.L	Partial evidence	Guasticce, ItalyHQ checked Sep 17, 2026	51-200	100 contacts →
	Partial evidence “RAM Energy E&C acts as main contractor, EP, EPC and EPCM, meeting the customers’ needs and ensuring the highest quality and safety standards- Engineering: able to develop…” Source: RevenueBase Database · checked Sep 17, 2026
4	Siirtec Nigi	Indirect evidence	Milan, ItalyHQ checked Sep 17, 2026	201-500	82 contacts →
	Indirect evidence “Siirtec Nigi is an ENGINEERING AND CONTRACTING COMPANY operating internationally in the field of oil and gas treatment sulphur recovery acid gas removal We design and supply…” Source: RevenueBase Database · checked Sep 17, 2026
5	Sikel Impianti	Indirect evidence	Syracuse, ItalyHQ checked Sep 17, 2026	11-50	48 contacts →
	Indirect evidence “Con una presenza operativa sul campo di oltre 50 anni, Sikel offre servizi di installazione e manutenzione di impianti produttivi, specializzandosi nel settore petrolchimico e…” Source: RevenueBase Database · checked Sep 17, 2026
6	Welding Duebi S.R.L	Indirect evidence	Fiesso Umbertiano, ItalyHQ checked Sep 17, 2026	201-500	44 contacts →
	Indirect evidence “Welding Duebi nasce nel 2002 in provincia di Rovigo, e nel giro di pochi anni si estenda a tal punto da insediarsi su tutto il territorio nazionale, con unità locali nei comuni di…” Source: RevenueBase Database · checked Sep 17, 2026
7	Compression Service Technology	Indirect evidence	Firenze, ItalyHQ checked Sep 17, 2026	11-50	40 contacts →
	Indirect evidence “Compression Service Technology - C.S.T.” Source: RevenueBase Database · checked Sep 17, 2026
8	Officine Tecniche DE Pasquale S.R.L	Indirect evidence	Modugno, ItalyHQ checked Sep 17, 2026	201-500	31 contacts →
	Indirect evidence “è un’azienda leader nella fornitura di servizi di ingegneria e manutenzione industriale su macchine rotanti e apparecchiature statiche, specializzata nella gestione ed esecuzione…” Source: RevenueBase Database · checked Sep 17, 2026
9	ISE	Indirect evidence	Marlia - Capannori, ItalyHQ checked Sep 17, 2026	11-50	31 contacts →
	Indirect evidence “ISE è una società di ingegneria che fornisce servizi e soluzioni per la manutenzione, la propria missione consiste nella ottimizzazione dell’efficienza degli impianti attraverso…” Source: RevenueBase Database · checked Sep 17, 2026
10	Jaes SRL	Partial evidence	Quinto Di Treviso, ItalyHQ checked Sep 17, 2026	11-50	27 contacts →
	Partial evidence “JAES Jaes is a company specialized in the maintenance of industrial plants with a customer support at 360 degrees, from the technical advice to maintenance, until final delivery…” Source: RevenueBase Database · checked Sep 17, 2026
11	Sicimontaggi S.R.L	Partial evidence	Priolo Gargallo, ItalyHQ checked Sep 17, 2026	201-500	26 contacts →
	Partial evidence “SICIMONTAGGI srl is an Italian mechanical Company established 2007 based in Syracuse industrial area, the hub of a large concentration of refineries and petrochemical plants…” Source: RevenueBase Database · checked Sep 17, 2026
12	Effegi SRL	Indirect evidence	Marghera, ItalyHQ checked Sep 17, 2026	51-200	25 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
13	RM Marine	Indirect evidence	Genova, ItalyHQ checked Sep 17, 2026	201-500	19 contacts →
	Indirect evidence “Our company was founded in 1973 by Mr.” Source: RevenueBase Database · checked Sep 17, 2026
14	Valmec SM	Indirect evidence	Rosignano Marittimo, ItalyHQ checked Sep 17, 2026	51-200	17 contacts →
	Indirect evidence “Valmec SM nasce grazie all’esperienza più che decennale ed alla passione inesauribile verso il multiforme universo della manutenzione industriale, proprie di ciascuno dei membri…” Source: RevenueBase Database · checked Sep 17, 2026
15	Racca Impianti S.R.L	Indirect evidence	Cavallermaggiore, ItalyHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence “Manutenzioni e riparazioni meccaniche installazione, trasformazione, ampliamento e manutenzione impianti di: riscaldamento e climatizzazione, idrosanitari, a gas e protezione…” Source: RevenueBase Database · checked Sep 17, 2026
16	GMA SRL	Partial evidence	Staranzano, ItalyHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “We specialize in fault prevention and equipment maintenance for industrial facilities in the Energy and Oil & Gas sectors.” Source: RevenueBase Database · checked Sep 17, 2026
17	Globchem Service International S.R.L	Partial evidence	Portici, ItalyHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Globchem Service International is an engineering company specialized in pre-commissioning, commissioning and maintenance services for Power Generation, Oil & Gas, Petrochemical…” Source: RevenueBase Database · checked Sep 17, 2026
18	M.C.P. S.R.L	Indirect evidence	Civitavecchia, ItalyHQ checked Sep 17, 2026	51-200	12 contacts →
	Indirect evidence “M.C.P.” Source: RevenueBase Database · checked Sep 17, 2026
19	Com.En.co. Group	Indirect evidence	Firenze, ItalyHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “Dal 1990 COM.EN.CO.” Source: RevenueBase Database · checked Sep 17, 2026
20	Spare Part & Service	Partial evidence	Inverigo, ItalyHQ checked Sep 17, 2026	1-10	10 contacts →
	Partial evidence “Spare part & Service borned to satisfy every need for maintenance, service, consulting and planning for companies.” Source: RevenueBase Database · checked Sep 17, 2026
21	FFC Ltd. Plants	Partial evidence	Santa Giustina, ItalyHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “Founded in 1979, FFC specializes in maintenance, overhaul, assembly, and disassembly for industrial facilities, including power plants, paper mills, and manufacturing plants.” Source: RevenueBase Database · checked Sep 17, 2026
22	Locati Impianti	Indirect evidence	Verdellino, ItalyHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “Operiamo da oltre 50 anni nella produzione di impianti.” Source: RevenueBase Database · checked Sep 17, 2026
23	Gemux S.R.L	Partial evidence	Nova Milanese, ItalyHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “Since 1997, Gemux has been the discerning operator’s provider of choice for the design, construction, certification, management and maintenance of industrial plants, skids and…” Source: RevenueBase Database · checked Sep 17, 2026
24	Co&m Group	Indirect evidence	Genoa, ItalyHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “We are a dynamic and leading company specializing in services of project management, coordination of pre-commissioning, commissioning, and O&M for the Oil & Gas industry and…” Source: RevenueBase Database · checked Sep 17, 2026
25	OIL Service SRL	Indirect evidence	Pavia, ItalyHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “Manutenzione personalizzata, servizi e prodotti nel settore degli impianti ad olio diatermico.” 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 173 refinery maintenance contractors based in Italy

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Refinery maintenance contractors based in Italy at a glance

As of Sep 17, 2026

19.6%Verified-email coverage

15.8Average contacts per company

11-50Median size (employees)

3.5%Largest-city concentration · Priolo Gargallo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

105

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Italy, so it is reported there. Company counts and contact totals on this page are exact for Italy, over 173 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 Italy 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 Italy 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, 533 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 Italy?

RevenueBase identified 173 refinery maintenance contractors headquartered in Italy 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?

Irem SPA, headquartered in Siracusa, tops this list with the largest team on record.

Which city has the most refinery maintenance contractors?

Priolo Gargallo leads with 6 headquartered companies, followed by Roma (6) and Milano Mi (5).

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 533 verified decision-maker contacts tracked across these 173 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.