Company lists · Data refreshed September 2026

Top 25 Structural materials companies based in Türkiye

Name: Structural materials companies based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 473 companies tracked

RevenueBase identified 473 structural materials companies headquartered in Türkiye as of September 2026 and tracks 4,131 professional contacts across them, including 454 with verified work emails. Istanbul is the largest hub.

This list covers structural materials companies 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 16, 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 16, 2026 86% judged on-target in blind review

473Companies

4,131Contacts tracked

454Verified emails

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The 25 largest structural materials companies based in Türkiye

Ranked by team size

Top 25 of 473 structural materials companies based in Türkiye, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to structural materials companies: 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	İston AŞ	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 16, 2026	1,001-5,000	174 contacts →
	Indirect evidence “İSTON – İstanbul Beton Elemanları ve Hazır Beton Fabrikaları Sanayi ve Ticaret A.Ş, 1986 yılında İstanbul Büyükşehir Belediyesi tarafından, kentin altyapı ve üstyapı ihtiyaçlarına…” Source: RevenueBase Database · checked Sep 16, 2026
2	Turk Ytong	Indirect evidence	Küçükyalı Merkez, TürkiyeHQ checked Sep 16, 2026	501-1,000	165 contacts →
	Indirect evidence “Ytong inşaat sektöründe dünya çapında tanınan, gazbetonun ilk üreticisi ve lider markasıdır.” Source: RevenueBase Database · checked Sep 16, 2026
3	Vefa Group	Indirect evidence	Sultanbeyli, TürkiyeHQ checked Sep 16, 2026	201-500	93 contacts →
	Indirect evidence “Türkiye’de 1990 yılından bu yana modüler konteyner, prefabrike panel, hafif ve yapısal çelik yapı ve yapı malzemeleri sektörünün önde gelen markalarına sahip olan Vefa Group…” Source: RevenueBase Database · checked Sep 16, 2026
4	Mescier Steel Industry&trade Company	Indirect evidence	Karabük, TürkiyeHQ checked Sep 16, 2026	1,001-5,000	91 contacts →
	Indirect evidence “Mescier Steel Industry & Trade Co.” Source: RevenueBase Database · checked Sep 16, 2026
5	Gulermak Steel Construction Ind. & Trade Co. INC	Indirect evidence	Izmir, TürkiyeHQ checked Sep 16, 2026	501-1,000	91 contacts →
	Indirect evidence “GULERMAK Steel Construction Ind.” Source: RevenueBase Database · checked Sep 16, 2026
6	Atak Engineering	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	501-1,000	75 contacts →
	Indirect evidence “Atak Engineering was founded in 1988.” Source: RevenueBase Database · checked Sep 16, 2026
7	Albayrak Demir Çelik	Indirect evidence	Samsun, TürkiyeHQ checked Sep 16, 2026	201-500	64 contacts →
	Indirect evidence “Albayrak Demir Çelik, 1980 yılında aile şirketi olarak kurulmuştur.” Source: RevenueBase Database · checked Sep 16, 2026
8	Apec Steel Construction	Partial evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	201-500	47 contacts →
	Partial evidence “APEC Smart Steel Structures is a group of companies operating in the field of engineering, manufacturing, construction and real estate development.” Source: RevenueBase Database · checked Sep 16, 2026
9	Çelikerler Çelik Konstrüksiyon İnşaat San. Tic. Ltd. ŞTI	Indirect evidence	Merkez, TürkiyeHQ checked Sep 16, 2026	51-200	46 contacts →
	Indirect evidence “Bartın Kumluca’da 1844 yılında sıcak demircilik ile iş hayatına başlayan Çelikerler, 2003 yılında şirketleşerek ÇELİKERLER LTD.” Source: RevenueBase Database · checked Sep 16, 2026
10	Rönesans Çelik	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	201-500	42 contacts →
	Indirect evidence “Rönesans Steel Construction Industry & Trade Inc.” Source: RevenueBase Database · checked Sep 16, 2026
11	Polarkon	Indirect evidence	Çankaya, TürkiyeHQ checked Sep 16, 2026	51-200	40 contacts →
	Indirect evidence “Founded in 1995 and headquartered in Ankara, Turkey, with global offices in Düsseldorf, Germany, and Chicago, Illinois, POLARKON is a leading "design-build" engineering and steel…” Source: RevenueBase Database · checked Sep 16, 2026
12	AKG Grubu	Indirect evidence	İzmir, TürkiyeHQ checked Sep 16, 2026	501-1,000	40 contacts →
	Indirect evidence “AKG Grubu 15 Nisan 2002 tarihinden beri "AKG Yalıtım ve İnşaat Malzemeleri Sanayi ve Ticaret Anonim Şirketi" tüzel kimliği ile faaliyetlerine devam etmektedir.” Source: RevenueBase Database · checked Sep 16, 2026
13	Pekintaş Construction	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	501-1,000	31 contacts →
	Indirect evidence “Pekintaş Pekin İnşaat A.Ş, inşaat sektöründe prefabrike ve öngerilmeli betonarme endüstriyel yapı elemanları sanayinde uzmanlaşmış bir firmadır.” Source: RevenueBase Database · checked Sep 16, 2026
14	IS Yapi	Partial evidence	Izmir, TürkiyeHQ checked Sep 16, 2026	51-200	29 contacts →
	Partial evidence “We are specialized in steel structures and fixing systems in all kinds of steel.” Source: RevenueBase Database · checked Sep 16, 2026
15	Monosteel	Indirect evidence	Sakarya, TürkiyeHQ checked Sep 16, 2026	51-200	28 contacts →
	Indirect evidence “Mono Steel is a Turkish manufacturing and construction company established in 2012.” Source: RevenueBase Database · checked Sep 16, 2026
16	Erki̇n Çeli̇k Konstrüksi̇yon	Indirect evidence	Pelitli, TürkiyeHQ checked Sep 16, 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 16, 2026
17	Forta İnşaat Taah. A.Ş	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 16, 2026	201-500	23 contacts →
	Indirect evidence “Forta İnşaat 2010 yılında “Innovative Construction” sloganı ile inşaat sektörüne yenilikçi ve kaliteli ürünler sunmak amacıyla kurulmuş inşaat malzemeleri üreten %100 Türk…” Source: RevenueBase Database · checked Sep 16, 2026
18	Boypanel Yapı Sistemleri	Indirect evidence	Adana, TürkiyeHQ checked Sep 16, 2026	51-200	23 contacts →
	Indirect evidence “1995 yılında faaliyetlerine başlayan BOYPANEL YAPI SİSTEMLERİ, yüksek oranlarda büyüme sağlayarak, Türkiye de kendi kategorisinde lider olma vizyonuyla, çatı-cephe kaplamaları…” Source: RevenueBase Database · checked Sep 16, 2026
19	EGE Panel Endüstri A.Ş	Indirect evidence	Çapak, TürkiyeHQ checked Sep 16, 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 16, 2026
20	HMD Energy And Metal	Indirect evidence	Ankara, TürkiyeHQ checked Sep 16, 2026	51-200	19 contacts →
	Indirect evidence “2011 yılında kurulan HMD Çelik Konstrüksiyon Türkiye’nin önde gelen konstrüksiyon firmalarından biridir.” Source: RevenueBase Database · checked Sep 16, 2026
21	Saytekno Building Technologies Group	Partial evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	11-50	19 contacts →
	Partial evidence “SAYTEKNO is a technological group founded in 1994 and working in the field of design, production and installation of architectural steel, freeform and art glass structures…” Source: RevenueBase Database · checked Sep 16, 2026
22	Spinteks Composite Fabrics	Indirect evidence	Denizli, TürkiyeHQ checked Sep 16, 2026	11-50	18 contacts →
	Indirect evidence “Spinteks, which began its innovative approach to the textile industry in 2002, commissioned production lines for carbon and hybrid woven fabrics for the aerospace, automotive…” Source: RevenueBase Database · checked Sep 16, 2026
23	Hibrit Mühendislik	Indirect evidence	İzmir, TürkiyeHQ checked Sep 16, 2026	11-50	15 contacts →
	Indirect evidence “Kurulduğumuz 2004 yılından bu yana ağırlıklı olarak sanayi yapılarına yönelik mühendislik, projelendirme ve danışmanlık hizmetleri konusunda faaliyet sürdürüyoruz.” Source: RevenueBase Database · checked Sep 16, 2026
24	Baugrup	Partial evidence	Sisli, TürkiyeHQ checked Sep 16, 2026	201-500	14 contacts →
	Partial evidence “BAUGRUP operates over 25 years in the research, fabrication and global supply of modern construction materials and production technologies for the construction industry, in over…” Source: RevenueBase Database · checked Sep 16, 2026
25	ESA Kompozit	Indirect evidence	Kocaeli, TürkiyeHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “ESA, kurulu bulunduğu Gebze “Dilovası Organize Sanayi Bölgesinde” konuşlanmış olup kompozit malzemelerin üretimini yapmaktadır.” Source: RevenueBase Database · checked Sep 16, 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: structural materials companies. 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 structural materials companies.
Partial evidence: Its own public description names part of structural materials companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name structural materials companies. 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 473 structural materials companies based in Türkiye

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Structural materials companies based in Türkiye at a glance

As of Sep 16, 2026

11.0%Verified-email coverage

8.7Average contacts per company

11-50Median size (employees)

15.9%Largest-city concentration · Istanbul

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

119

11-50

163

51-200

117

201-500

501-1,000

1,001-5,000

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 473 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 structural materials companies, 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 “structural materials companies”. 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 structural materials companies), 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 structural materials companies, 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, 454 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 16, 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.

Structural materials companies by metro

Structural materials companies in Istanbul75
Structural materials companies in Ankara45
Structural materials companies in Izmir25

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 structural materials companies, 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 structural materials companies are there based in Türkiye?

RevenueBase identified 473 structural materials companies 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?

İston AŞ, headquartered in Istanbul, tops this list with the largest team on record.

Which city has the most structural materials companies?

Istanbul leads with 75 headquartered companies, followed by Ankara (45) and Izmir (25).

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 454 verified decision-maker contacts tracked across these 473 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 16, 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.