Company lists · Data refreshed November 2026

Top 25 Refinery engineering companies based in Spain

RevenueBase identified 615 company matches for refinery engineering companies associated with Spain as of November 2026 and tracks 23,101 professional contacts across them, including 3,777 with verified work emails. Madrid is the largest hub.

This list covers company matches for refinery engineering companies associated with Spain, 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 November 6, 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 Nov 6, 2026 How this list was built
615Companies
23,101Contacts tracked
3,777Verified emails
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The 25 largest refinery engineering companies based in Spain

Ranked by team size
Top 25 of 615 company matches for refinery engineering companies based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchMadrid, SpainHQ recorded Nov 6, 202610001+11,748 contacts →

Exact match

“TR is an international general contractor engaged in the engineering and construction of industrial facilities in the fields of-Oil & Gas -Refining & Petrochemical -Power…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact match11510 Puerto Real, SpainHQ recorded Nov 6, 20261,001-5,0001,579 contacts →

Exact match

“Founded in 1972, Dragados Offshore S.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBilbao, SpainHQ recorded Nov 6, 20261,001-5,000750 contacts →

Exact match

“NERVION INDUSTRIES is a business group dedicated to industrial services and applied engineering, providing services in strategic sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBarcelona, SpainHQ recorded Nov 6, 2026501-1,000405 contacts →

Exact match

“Iplan is a company related to the engineering services of projects developed mainly in the energy sector, civil works, renewable energies and environment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMadrid, SpainHQ recorded Nov 6, 2026501-1,000394 contacts →

Exact match

“Intecsa Industrial is a Spanish engineering company with more than 50 years experience in Engineering, “Turn-key” execution of industrial plants and supply of technological…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-200367 contacts →

Exact match

“JG Ingenieros, S.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchParets Del Vallès, SpainHQ recorded Nov 6, 202651-200365 contacts →

Exact match

“BACHILLER is an industrial engineering company specialized in the design and construction of process equipment and pressure vessels for the chemical, petrochemical, fine chemical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCórdoba, SpainHQ recorded Nov 6, 2026201-500272 contacts →

Exact match

“ECOINTEGRAL INGENIERÍA is an independent company of advanced engineering and consulting firm that operates in 3 areas of expertise: Energy, Telecommunications and Environment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBergondo, SpainHQ recorded Nov 6, 2026201-500229 contacts →

Exact match

“TEIGA TMI es una empresa con más de 40 años de experiencia, que ofrece soluciones y servicios de ingeniería; montaje y mantenimiento mecánico-eléctrico; con implantación en…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchUrduliz, SpainHQ recorded Nov 6, 2026201-500166 contacts →

Exact match

“LOINTEK is a private company firmly established in the international market of engineering, supply, manufacture and service in the sector of equipment for the industry of the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCartagena, SpainHQ recorded Nov 6, 2026201-500150 contacts →

Exact match

“Since 1990, Techno Pro Hispania (TPH) and the FIVA Group have worked closely with their clients in the development of industrial, naval, energy, and petrochemical engineering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchA Coruña, SpainHQ recorded Nov 6, 202651-200147 contacts →

Exact match

“Instra Ingenieros, empresa de ingeniería y consultoría, aporta creatividad e innovación en sus servicios para el desarrollo industrial y empresarial.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchErandio, SpainHQ recorded Nov 6, 202651-200125 contacts →

Exact match

“Founded in 1979, EIA21 was chartered with the aim of responding to the engineering needs of high growth industrial companies, soon achieved a strong footprint in this area…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMadrid, SpainHQ recorded Nov 6, 2026201-500116 contacts →

Exact match

“HEYMO es una empresa de servicios profesionales de ingeniería y consultoría que cuenta con 60 años de experiencia nacional e internacional.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Nov 6, 2026201-500108 contacts →

Exact match

“Engineering company based in Madrid, Spain with over 40 years of experience in the fields of petrochemical and industrial engineering, conventional and nuclear power plants…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSeville, SpainHQ recorded Nov 6, 202651-200108 contacts →

Exact match

“AZCATEC It is the tool for a group of well-organized professional engineers and experts in the development of industrial plants, energy and environmental engineering have to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMadrid, SpainHQ recorded Nov 6, 202651-200107 contacts →

Exact match

“DISEÑOS Y PROYECTOS REUNIDOS, S.A.(DISEPROSA), fundada en Madrid en 1986 y dedicada al desarrollo y prestación de servicios de Ingeniería y Consultoría, Dirección y Supervisión de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchEl Palmar (murcia), SpainHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“Emurtel es una compañía líder de ingeniería y consultoría multidisciplinar orientada a la gestión integral de proyectos, ofreciendo soluciones de valor añadido en el diseño…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMajadahonda, SpainHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“The work of CT3 Ingeniería is aimed at ensuring utmost customer satisfaction through project engagement and commitment, while favouring the professional and personal development…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAbrera, SpainHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“En LEDR Ingeniería y Servicios SL no solo diseñamos sobre el plano, nuestra verdadera fuerza reside en la capacidad de ejecutar proyectos desde el concepto inicial hasta la puesta…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchGijón, SpainHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“COSERMO ESPAÑOLA S.L Passion for perfection.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBetanzos, SpainHQ recorded Nov 6, 2026201-50078 contacts →

Exact match

“INELTRON es una empresa multinacional especializada en la prestación de servicios de ingeniería, construcción, puesta en marcha, operación y mantenimiento en sistemas de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSan Sebastián De Los Reyes, SpainHQ recorded Nov 6, 2026201-50065 contacts →

Exact match

“Design and Projects International, C.A.(DAPIN, C.A.), is a thriving engineering and construction company in the Oil & Gas / Energy industry positioned in natural gas, refining…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchTorrejón De Ardoz, SpainHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“DiagnóstiQA se constituye en junio de 2007 con el objeto de proporcionar servicios técnicos de Consultoría, Asistencia Técnica, Supervisión, Inspección y Diagnóstico para el…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“ENG Aguilar y Salas, s.a.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 615 refinery engineering companies based in Spain

See the full list, filter by size, metro and specialty, and access 3,777 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery engineering companies based in Spain at a glance

As of Nov 6, 2026
16.3%Verified-email coverage
37.6Average contacts per company
1-10Median size (employees)
13.7%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
330
11-50
186
51-200
65
201-500
18
501-1,000
6
1,001-5,000
4
10001+
1

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 615 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 Spain whose business descriptions match “refinery engineering 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 3,777 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 November 6, 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 “refinery engineering companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery engineering companies are there based in Spain?

RevenueBase identified 615 company matches for refinery engineering companies associated with Spain as of November 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?

Tecnicas Reunidas tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery engineering companies?

Madrid leads with 84 company records, followed by Barcelona (36) and Seville (25).

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 3,777 professional contacts with verified work emails tracked across these 615 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 November 6, 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.