Company lists · Data refreshed November 2026

Top 25 Structural steel mills based in Türkiye

RevenueBase identified 426 company matches for structural steel mills associated with Türkiye as of November 2026 and tracks 13,424 professional contacts across them, including 2,355 with verified work emails. Istanbul is the largest hub.

This list covers company matches for structural steel mills 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
426Companies
13,424Contacts tracked
2,355Verified emails
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The 25 largest structural steel mills based in Türkiye

Ranked by team size
Top 25 of 426 company matches for structural steel mills 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 matchZonguldak, TürkiyeHQ recorded Nov 6, 20265,001-10,0002,173 contacts →

Exact match

“Erdemir, the main company of the OYAK Mining Metallurgy and one of the most valuable industrial assets of Turkey, was established in 1960 under a special law, in order to be the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMerkez, TürkiyeHQ recorded Nov 6, 20261,001-5,000921 contacts →

Exact match

“Türkiye’nin ilk entegre demir çelik fabrikası olan Kardemir’in temelleri 3 Nisan 1937 tarihinde atıldı.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 20261,001-5,000872 contacts →

Exact match

“Çolakoğlu’s involvement in the iron and steel business began with the steel trade business that our founder Mehmet Rüştü Çolakoğlu started in Karaköy, İstanbul, in 1945.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchIzmir, TürkiyeHQ recorded Nov 6, 20261,001-5,000634 contacts →

Exact match

“IDC Steel is one of the leading long steel producers in Turkey with 1,5 million tons crude steel capacity annually.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHatay, TürkiyeHQ recorded Nov 6, 20261,001-5,000437 contacts →

Exact match

“MMK Metalurji, MMK Group’s investment in Turkey, gives service in İskenderun and Gebze regions with the investment costs approximately 2,5 billion USD.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchCayirova / Gebze, TürkiyeHQ recorded Nov 6, 20261,001-5,000407 contacts →

Exact match

“Hasçelik, founded in 1968, continued its activities as a manufacturer and supplier of special steel and bright steel until 2017 under one roof.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchİzmir, TürkiyeHQ recorded Nov 6, 20261,001-5,000348 contacts →

Exact match

“Operating in the steel profile segment of the iron and steel industry, Kocaer Steel is the export champion of the Aegean Region in the iron and steel industry with foreign…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchİzmit, TürkiyeHQ recorded Nov 6, 2026501-1,000343 contacts →

Exact match

“Yıldız Demir Çelik, Türkiye'de ve dünyada büyük yatırımlara imza atan Yıldızlar Yatırım Holding’in grup iştirakidir.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 20261,001-5,000342 contacts →

Exact match

“More then 50 years of experience in Iron & Steel Industry and a new player in Energy and Mining.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchKocaeli, TürkiyeHQ recorded Nov 6, 20261,001-5,000338 contacts →

Exact match

“1966 yılında demir çelik ürünleri imalatı ve ticareti yapmak amacıyla kurulan Kroman Çelik Kroman Çelik, 1985 yılında Yücel Grup bünyesine katılmıştır.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchDenizli, TürkiyeHQ recorded Nov 6, 20261,001-5,000324 contacts →

Exact match

“1968 yılında Denizli’deki ilk üretim tesisi ile sanayi yolculuğuna başlayan Kardemir Çelik, bugün 1350’nin üzerinde çalışanı, İzmir ve Denizli’de 7 adet üretim tesisi ve uzun…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 2026501-1,000304 contacts →

Exact match

“Tatmetal, Türkiye’nin lider yassı sac üreticilerinden biri olarak; sıcak haddelenmiş asitlenmiş, soğuk haddelenmiş, galvanizli ve boyalı yassı çelik üretimi gerçekleştirmektedir.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchIzmir, TürkiyeHQ recorded Nov 6, 2026501-1,000267 contacts →

Exact match

“ÖZKAN Steel was founded in 1953 and has its headquarter and production sites in İzmir-Aliağa over an area of ÖZKAN Steel, having a melting capacity of tons and rolling capacity of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHatay, TürkiyeHQ recorded Nov 6, 2026501-1,000166 contacts →

Exact match

“1993 yılında demir çelik sektöründe ticari hayatına başlayan Koç Metalurji A.Ş, kurulduğu günden bu yana sektörde öncü bir rol üstlenmiştir.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchKocaeli-kartepe, TürkiyeHQ recorded Nov 6, 2026501-1,000151 contacts →

Exact match

“Dikey büyümeyi hedefleyen ve bu anlayışla entegrasyona yönelik yatırımlarına aralıksız devam eden Tezcan A.Ş, yılda 1.3 milyon ton yassı mamul üretim hacmine sahip olup, yüksek…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSakarya, TürkiyeHQ recorded Nov 6, 2026201-500123 contacts →

Exact match

“We specialise in steel trading and custom-welded fabrication of chassis, frames, and components for rail systems, trailers, construction equipment, and more.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchKarabük, TürkiyeHQ recorded Nov 6, 20261,001-5,000100 contacts →

Exact match

“Mescier Steel Industry & Trade Co.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchIzmir, TürkiyeHQ recorded Nov 6, 2026501-1,00092 contacts →

Exact match

“GULERMAK Steel Construction Ind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSamsun, TürkiyeHQ recorded Nov 6, 2026201-50071 contacts →

Exact match

“Albayrak Demir Çelik, 1980 yılında aile şirketi olarak kurulmuştur.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchKarabük, TürkiyeHQ recorded Nov 6, 2026201-50060 contacts →

Exact match

“ISIK STEEL founded in 1965 with the goal of building a prosperous future for all, aims to create steel products that are core of contemporary architecture.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Hakan Sac Metal A.Ş nin ilk öyküsü 1970 yılında babamız HÜSEYİN BİLGİN ile Ankara Atasanayisi'nde Çelik Eşya imalatı olarak başlamıştır.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-50051 contacts →

Exact match

“APEC Smart Steel Structures is a group of companies operating in the field of engineering, manufacturing, construction and real estate development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMerkez, TürkiyeHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Bartın Kumluca’da 1844 yılında sıcak demircilik ile iş hayatına başlayan Çelikerler, 2003 yılında şirketleşerek ÇELİKERLER LTD.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchKırıkkale, TürkiyeHQ recorded Nov 6, 2026201-50049 contacts →

Exact match

“Kırıkkale Demir Çelik A.Ş.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchKarabük, TürkiyeHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“1979 yılında faaliyetlerine başlayan Çelsantaş Çelik Mamülleri, 50 yılı aşkın süredir demir çelik sektöründe faaliyetlerine devam eden Yücel Grup bünyesinde yer almaktadır.”

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

Showing 25 of 426 structural steel mills based in Türkiye

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Structural steel mills based in Türkiye at a glance

As of Nov 6, 2026
17.5%Verified-email coverage
31.5Average contacts per company
11-50Median size (employees)
12.7%Largest-city concentration · Istanbul
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
75
11-50
155
51-200
102
201-500
47
501-1,000
23
1,001-5,000
18
5,001-10,000
1

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 426 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 “structural steel mills” 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 2,355 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 “structural steel mills”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many structural steel mills are there based in Türkiye?

RevenueBase identified 426 company matches for structural steel mills 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?

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

Which city has the most structural steel mills?

Istanbul leads with 54 company records, followed by Kocaeli (42) and Ankara (32).

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 2,355 professional contacts with verified work emails tracked across these 426 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.