Company lists · Data refreshed September 2026

Top 25 High-strength steel manufacturers based in Türkiye

Name: High-strength steel manufacturers based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 182 companies tracked

RevenueBase identified 182 high-strength steel manufacturers headquartered in Türkiye as of September 2026 and tracks 7,758 professional contacts across them, including 1,532 with verified work emails. Istanbul is the largest hub.

This list covers high-strength steel manufacturers headquartered in Türkiye, 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 30, 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 30, 2026 86% judged on-target in blind review

182Companies

7,758Contacts tracked

1,532Verified emails

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The 25 largest high-strength steel manufacturers based in Türkiye

Ranked by team size

Top 25 of 182 high-strength steel manufacturers based in Türkiye, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to high-strength steel manufacturers: 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	Erdemir	Indirect evidence	Zonguldak, TürkiyeHQ checked Sep 30, 2026	5,001-10,000	1,974 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
2	Çolakoğlu Metalurji A.Ş	Partial evidence	Istanbul, TürkiyeHQ checked Sep 30, 2026	1,001-5,000	790 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
3	Izmir Demir Celik IDC Steel	Partial evidence	Izmir, TürkiyeHQ checked Sep 30, 2026	1,001-5,000	563 contacts →
	Partial evidence “IDC Steel is one of the leading long steel producers in Turkey with 1,5 million tons crude steel capacity annually.” Source: RevenueBase Database · checked Sep 30, 2026
4	Kocaer Steel	Partial evidence	İzmir, TürkiyeHQ checked Sep 30, 2026	1,001-5,000	341 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
5	Yıldız Demir Çelik	Indirect evidence	İzmit, TürkiyeHQ checked Sep 30, 2026	501-1,000	310 contacts →
	Indirect evidence “Yıldız Demir Çelik, Türkiye'de ve dünyada büyük yatırımlara imza atan Yıldızlar Yatırım Holding’in grup iştirakidir.” Source: RevenueBase Database · checked Sep 30, 2026
6	Kardemir Çelik Sanayi A.Ş	Indirect evidence	Denizli, TürkiyeHQ checked Sep 30, 2026	1,001-5,000	300 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
7	Özkan Steel	Partial evidence	Izmir, TürkiyeHQ checked Sep 30, 2026	501-1,000	233 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
8	Çemtaş Çelik Makina Sanayi VE Ticaret A.Ş	Indirect evidence	Bursa, TürkiyeHQ checked Sep 30, 2026	201-500	147 contacts →
	Indirect evidence “ÇEMTAŞ has been established on 27.01.1970 on a land of m2 in the Bursa Organized Industrial Zone by the merge of industrialists, businessmen, small craftsmen and public…” Source: RevenueBase Database · checked Sep 30, 2026
9	Tezcan Galvaniz	Indirect evidence	Kocaeli-kartepe, TürkiyeHQ checked Sep 30, 2026	501-1,000	141 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
10	Akçeli̇k Group	Indirect evidence	Kocaeli̇, TürkiyeHQ checked Sep 30, 2026	201-500	128 contacts →
	Indirect evidence “Akçelik started its commercial activities in Izmir in 1978.” Source: RevenueBase Database · checked Sep 30, 2026
11	Yilgenci̇ TR	Partial evidence	Sakarya, TürkiyeHQ checked Sep 30, 2026	201-500	111 contacts →
	Partial evidence “We specialise in steel trading and custom-welded fabrication of chassis, frames, and components for rail systems, trailers, construction equipment, and more.” Source: RevenueBase Database · checked Sep 30, 2026
12	Mescier Steel Industry&trade Company	Partial evidence	Karabük, TürkiyeHQ checked Sep 30, 2026	1,001-5,000	91 contacts →
	Partial evidence “Mescier Steel Industry & Trade Co.” Source: RevenueBase Database · checked Sep 30, 2026
13	Isik Steel	Partial evidence	Karabük, TürkiyeHQ checked Sep 30, 2026	201-500	56 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
14	Voestalpine High Performance Metal Türkiye	Indirect evidence	Kocaeli, TürkiyeHQ checked Sep 30, 2026	201-500	55 contacts →
	Indirect evidence “voestalpine dünyada 4 farklı alanda 500 Grup şirketi tarafından temsil edilmektedir.” Source: RevenueBase Database · checked Sep 30, 2026
15	Birler Celik	Strong evidence	Istanbul, TürkiyeHQ checked Sep 30, 2026	51-200	31 contacts →
	Strong evidence “Established in 1976, Birler Celik has a mission to deliver high-quality steel, engaging with different industries globally.” Source: RevenueBase Database · checked Sep 30, 2026
16	Uslu Demir Çelik	Strong evidence	Samsun, TürkiyeHQ checked Sep 30, 2026	11-50	31 contacts →
	Strong evidence “Uslu Demir Çelik is among the most reputable companies in the steel industry with its strong capital, its reliability and its fast and high-quality service.” Source: RevenueBase Database · checked Sep 30, 2026
17	Monosteel	Partial evidence	Sakarya, TürkiyeHQ checked Sep 30, 2026	51-200	28 contacts →
	Partial evidence “Mono Steel is a Turkish manufacturing and construction company established in 2012.” Source: RevenueBase Database · checked Sep 30, 2026
18	Akmetal Metallurgical Industries Corp	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 30, 2026	51-200	25 contacts →
	Indirect evidence “AKMETAL Metallurgical Ind.” Source: RevenueBase Database · checked Sep 30, 2026
19	Erki̇n Çeli̇k Konstrüksi̇yon	Indirect evidence	Pelitli, TürkiyeHQ checked Sep 30, 2026	51-200	24 contacts →
	Indirect evidence “Erkin Çelik Konstrüksiyon, yapısal çelik imalatı ve montajında mühendislik disiplini, kalite anlayışı ve güçlü üretim altyapısıyla yurt içi ve yurt dışı projelere hizmet…” Source: RevenueBase Database · checked Sep 30, 2026
20	EGE Panel Endüstri A.Ş	Indirect evidence	Çapak, TürkiyeHQ checked Sep 30, 2026	201-500	22 contacts →
	Indirect evidence “2001 yılında gittikçe büyüyen firmamız; Ege Toros Boru Profil Sanayi ve Ticaret Limited Şirketi olarak kurumsal bir yapıya kavuşarak 2005 yılında İzmir Kemalpaşa ilçesinde m2 açık…” Source: RevenueBase Database · checked Sep 30, 2026
21	SMI Grup	Indirect evidence	Aksaray, TürkiyeHQ checked Sep 30, 2026	11-50	17 contacts →
	Indirect evidence “SMI GRUP, 2007 yılında, kendine has vizyonuyla, Türkiye’nin yassı çelik ve rulo sac işleme merkezi olarak kuruldu.” Source: RevenueBase Database · checked Sep 30, 2026
22	HDM Çeli̇k Boru	Indirect evidence	Akdeniz, TürkiyeHQ checked Sep 30, 2026	201-500	14 contacts →
	Indirect evidence “HDM, çelik konstrüksiyon ve çelik kazık borusu sektörlerine farklı ebatlarda ve özel boylarda üretim yapmaktadır.” Source: RevenueBase Database · checked Sep 30, 2026
23	Nlmk Turkey	Partial evidence	Şişli, TürkiyeHQ checked Sep 30, 2026	n/a	14 contacts →
	Partial evidence “NLMK Group is a leading international steel company.” Source: RevenueBase Database · checked Sep 30, 2026
24	Fatab Metal A.Ş	Indirect evidence	Çerkezköy, TürkiyeHQ checked Sep 30, 2026	51-200	14 contacts →
	Indirect evidence “FATAB METAL A.S.” Source: RevenueBase Database · checked Sep 30, 2026
25	Askon Demir Çelik	Indirect evidence	Denizli, TürkiyeHQ checked Sep 30, 2026	501-1,000	13 contacts →
	Indirect evidence “In 1932, Demir Çelik San.” Source: RevenueBase Database · checked Sep 30, 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: high-strength steel manufacturers. 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 high-strength steel manufacturers.
Partial evidence: Its own public description names part of high-strength steel manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name high-strength steel manufacturers. 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 182 high-strength steel manufacturers based in Türkiye

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High-strength steel manufacturers based in Türkiye at a glance

As of Sep 30, 2026

19.7%Verified-email coverage

42.6Average contacts per company

11-50Median size (employees)

14.8%Largest-city concentration · Istanbul

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 182 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 high-strength steel manufacturers, 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 Türkiye whose own description of what they do matches “high-strength steel manufacturers”. 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 high-strength steel manufacturers), 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 high-strength steel manufacturers, and records with no verified work email. Companies headquartered outside Türkiye 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, 1,532 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 30, 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 high-strength steel manufacturers, 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 high-strength steel manufacturers are there based in Türkiye?

RevenueBase identified 182 high-strength steel manufacturers headquartered in Türkiye 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?

Erdemir, headquartered in Zonguldak, tops this list with the largest team on record.

Which city has the most high-strength steel manufacturers?

Istanbul leads with 27 headquartered companies, followed by Kocaeli (18) and Bursa (9).

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 1,532 verified decision-maker contacts tracked across these 182 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 30, 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.