Company lists · Data refreshed November 2026

Top 25 Refinery upgrade contractors based in Türkiye

RevenueBase identified 503 company matches for refinery upgrade contractors associated with Türkiye as of November 2026 and tracks 7,396 professional contacts across them, including 1,107 with verified work emails. Istanbul is the largest hub.

This list covers company matches for refinery upgrade contractors associated with Türkiye, 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
503Companies
7,396Contacts tracked
1,107Verified emails
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The 25 largest refinery upgrade contractors based in Türkiye

Ranked by team size
Top 25 of 503 company matches for refinery upgrade contractors based in Türkiye, 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 matchIstanbul, TürkiyeHQ recorded Nov 6, 202610001+1,510 contacts →

Exact match

“Rönesans Endüstri Tesisleri specializes in construction services and EPC in Hydrocarbons, Power, Metallurgy & Mining and Process Plants sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 20261,001-5,000369 contacts →

Exact match

“Headquartered in Istanbul / Turkey, Teknokon Group is a multi-disciplinary organization serving its clientele with a full range of engineering, procurement and construction for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAnkara, TürkiyeHQ recorded Nov 6, 20265,001-10,000322 contacts →

Exact match

“EKON is a leading engineering & construction company for establishing infrastructure and integrated industrial projects from the planning and design stages, through engineering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 20261,001-5,000257 contacts →

Exact match

“Welcome to DEHA TECH Engineering & Contracting Group We provide engineering and contracting services all around the world with our experienced team.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 2026501-1,000180 contacts →

Exact match

“ViTO Energy Engineering and Construction is an integrated EPC services provider for industrial projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-500153 contacts →

Exact match

“EXACONS Project and Contracting Inc; was founded in 2014, Istanbul based on the vision to become a Solution Partner in every phase of the industrial facility life cycle for local…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchKocaeli̇, TürkiyeHQ recorded Nov 6, 2026501-1,000144 contacts →

Exact match

“Teknik Montaj Endüstri Tesisleri İmalat ve Montaj San.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBesiktas, TürkiyeHQ recorded Nov 6, 202610001+135 contacts →

Exact match

“ENKA is a global engineering and construction firm headquartered in Istanbul, Turkey.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026201-50093 contacts →

Exact match

“PRIZMA started operations in Ankara-Turkey in 2001.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchÇankaya, TürkiyeHQ recorded Nov 6, 202651-20091 contacts →

Exact match

“Stadia Engineering and Consultancy was established in 2018.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-50087 contacts →

Exact match

“MCA Yapı, 2010 yılında mekanik ve elektrik sistemlerde yüksek kaliteli mühendislik çözümleri sunmak amacıyla kurulmuştur.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchAtasehir, TürkiyeHQ recorded Nov 6, 2026501-1,00073 contacts →

Exact match

“Teknika Teknik Taahhüt A.Ş.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSöğütlü, TürkiyeHQ recorded Nov 6, 202651-20071 contacts →

Exact match

“Vespro is an international engineering & fabrication company supporting the realization of chemical plants across the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBornova, TürkiyeHQ recorded Nov 6, 202611-5064 contacts →

Exact match

“At A Glance;* Oil & Gas Engineering Company,* Managed by Practicing Refinery Engineers,* Engineering Expertise that Minimizes Cost & Improves Process,* Over 100 Total Project…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“1998 yılından günümüze çevre koruma konusunda faaliyet gösteren Artemis Arıtım uluslararası bilgi ve tecrübeye sahip mühendisleri ve akademik danışmanlarıyla birçok başarılı…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAtasehir, TürkiyeHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“The Joule Energy's main activities are the installation, maintenance, engineering services and spare parts supply of Power Plants, Rafineries & Industries Plants."Joule Energy"…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“EGESA Elektrik İnşaat Enerji Üretim A.Ş enerji sektörünün lider mühendislik ve taahhüt firmasıdır.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“Aksoylar Mühendislik, endüstriyel tesisler için komple kuruluma dayalı bir taahhüt firmasıdır.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026201-50055 contacts →

Exact match

“SINTEK Heavy Industries (SHI) is a contracting company established by the partnership between Sintek and Ekare.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAtatürk, TürkiyeHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“TE Engineering and Consultancy firm founded in 2015 by 2 civil engineers who has been working as a professional in industrial, commercial and residential buildings for about 17…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchİzmir, TürkiyeHQ recorded Nov 6, 202611-5045 contacts →

Exact match

“HESATEKNİK dönemin gelişmiş ve verimli teknoloji altyapılarını kullanarak, geleceğin endüstriyel ve enerji üretim tesislerini müşterilerine anahtar teslimi sunmayı, kesintisiz…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-50041 contacts →

Exact match

“EPC, EPCM and LSTK Services Enprode's vast experience that has garnered across its core competencies speak for Enprode's credentials as a first-class provider of EPC-LSTK / EPCM…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchPelitli, TürkiyeHQ recorded Nov 6, 202651-20040 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchUmraniye, TürkiyeHQ recorded Nov 6, 2026501-1,00038 contacts →

Exact match

“We are delighted to introduce D&T Group as an engineering and contracting company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchAliaga, TürkiyeHQ recorded Nov 6, 2026201-50037 contacts →

Exact match

“CleanTank Mühendislik - Mühendislik Hizmeti - Kumlama ve Boyama Hizmeti - API 650 Tank İmalatları - API 653 Tank Bakım Onarım Hizmeti CleanTank Mekanik - Endüstriyel Borulama…”

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

Showing 25 of 503 refinery upgrade contractors based in Türkiye

See the full list, filter by size, metro and specialty, and access 1,107 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery upgrade contractors based in Türkiye at a glance

As of Nov 6, 2026
15.0%Verified-email coverage
14.7Average contacts per company
11-50Median size (employees)
20.3%Largest-city concentration · Istanbul
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
166
11-50
190
51-200
84
201-500
42
501-1,000
10
1,001-5,000
7
5,001-10,000
2
10001+
2

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 503 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 Türkiye whose business descriptions match “refinery upgrade contractors” 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 1,107 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 upgrade contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery upgrade contractors are there based in Türkiye?

RevenueBase identified 503 company matches for refinery upgrade contractors associated with Türkiye 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?

Ronesans Endustri Tesisleri tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery upgrade contractors?

Istanbul leads with 102 company records, followed by Ankara (50) and Izmir (38).

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 1,107 professional contacts with verified work emails tracked across these 503 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.