Karabuk Organized Industrial Zone — Steel Product (Steel)

Özkaya Soğuk Çekme San. Tic. Ltd. Şti.

Cold Drawn Round Bar / Transmission Shaft

Steel Product

Özkaya Soğuk Çekme was founded in 1986 in the Safranbolu industrial area to manufacture transmission shafts. The product list names cold drawn round bar and steel transmission as separate items. The company serves the iron-steel and industrial sectors with a 5000-ton annual capacity and a specialist team; domestic sales continue.

Karabük · Karabuk Organized Industrial Zone

Özkaya Soğuk Çekme San. Tic. Ltd. Şti.

Cold Drawn Hexagonal Bar

Steel Product

The company about page names hexagonal iron among the products it was founded to make; the catalog lists cold drawn hexagonal bar and hot drawn hex as separate items. Since 1986 it has served the iron-steel and industrial sectors. Annual capacity is 5000 tons, with standards compliance and quality as the stated principle, and domestic sales continue.

Karabük · Karabuk Organized Industrial Zone

Özkaya Soğuk Çekme San. Tic. Ltd. Şti.

Cold Drawn Square Bar

Steel Product

The about page states that the firm was founded to manufacture cold square bar; the catalog lists cold drawn square and hot drawn square separately. The contact page summarizes the range as transmission shaft, hex, square and flat. Annual capacity is 5000 tons; a specialist team continues domestic sales.

Karabük · Karabuk Organized Industrial Zone

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Şahin Demir Sanayi ve Ticaret Ltd. Şti.

Flat Bar (Lama)

Steel Product

Şahin Demir Sanayi sells angle, lama (flat bar), silme, square, profile and wrought iron in Karabük. The firm entered iron and steel trade in 1999 and bought a rolling mill in the New Industrial Section in 2003. The hot rolling plant under investment is planned to produce round, lama, silme, square and angle bars at 70,000 tonnes per year. While that investment continues, the company still trades lama among its commercial steel range.

Karabük · Karabuk Organized Industrial Zone

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Şahin Demir Sanayi ve Ticaret Ltd. Şti.

Square Bar

Steel Product

Square bar is listed as its own catalogue heading. The About page states the company buys and sells square, lama, silme and profile; the homepage says it still sells angle, lama, silme, square, profile and wrought iron. It manufactured in-house from 2003 to 2008 and continued trading when output was insufficient. Square bar is also among the products planned for the Karabük OSB hot rolling investment.

Karabük · Karabuk Organized Industrial Zone

Şahin Demir Sanayi ve Ticaret Ltd. Şti.

Marked Flat Bar

Steel Product

Marked flat bars (izli lama) are listed under wrought iron; the English site files them as marked lamas. The Karabük OSB directory records the activity as wrought-iron manufacture and marked lama, silme and square iron manufacture. The company also states that it does transport and wrought-iron manufacturing. A full wrought-iron plant has been under installation in the OSB since 2008; izli lama belongs to that wrought-iron range.

Karabük · Karabuk Organized Industrial Zone

Çelsantaş Çelik Mamülleri Sanayi ve Ticaret A.Ş.

NPI / NPU Sections

Steel Product

The products page lists NPU heights 50–400 mm and NPI 80–450 mm. Standard lengths are 6 or 12 m, length tolerance -0/+100 mm, grades S 235 JR or S 275 JR. They are hot-rolled structural sections for construction, machinery, agriculture and energy. The quality page lists TSE-910 I-beam and TSE-912 U-channel documents.

Karabük · Karabuk Organized Industrial Zone

Çelsantaş Çelik Mamülleri Sanayi ve Ticaret A.Ş.

Equal Angle

Steel Product

Equal angles are listed 20–120 mm height, 6 or 12 m standard length, tolerance -0/+100 mm, grade S 235 JR. About states the firm pioneered domestic angle production in 1979. The quality page publishes TSE-10056-2 for angles. Production has been at the Karabük OSB (KOSB) plant since 2021.

Karabük · Karabuk Organized Industrial Zone

Çelsantaş Çelik Mamülleri Sanayi ve Ticaret A.Ş.

HEA / HEB / IPE Sections

Steel Product

The products page lists IPE 80–600 mm, HEA 96–990 mm and HEB 100–1000 mm. Standard lengths 6 or 12 m, tolerance -0/+100 mm, grades S 235 JR or S 275 JR. These hot-rolled structural sections are aimed at construction, machinery, agriculture and energy. Quality documents include EN 10025-1:2004 and TSE I/U profile standards.

Karabük · Karabuk Organized Industrial Zone

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Dofer Yapı Malzemeleri Sanayi ve Ticaret A.Ş.

Steel Mesh

Steel Product

Corporate text states mesh production started at Başkent OSB in 2015 with 33,525 t/year mesh capacity. A second mesh plant opened in Karabük OSB in 2017 (Organize Sanayi Yolu Cad. No:1/3). Steel mesh is a separate activity-menu item. Combined Ankara capacity with cut-and-bent rebar and bar is published as 71,725 t/year.

Karabük · Karabuk Organized Industrial Zone

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Dofer Yapı Malzemeleri Sanayi ve Ticaret A.Ş.

Cut-and-Bent Rebar

Steel Product

Cut-and-bent rebar started at Sincan Başkent OSB in 2005. Corporate text publishes 37,200 t/year of cutting and bending. Hazır Demir is a separate activity-menu item. The 2017 Karabük OSB mesh plant is in the same group; the Ankara factory is still described as the main cut-and-bent site.

Karabük · Karabuk Organized Industrial Zone

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Dofer Yapı Malzemeleri Sanayi ve Ticaret A.Ş.

Reinforcing Steel

Steel Product

In its early years the company focused on wholesale and retail deformed reinforcing bar. İnşaat Demiri is a separate activity-menu item. Başkent OSB capacity lists 1,000 t/year of bar, together with mesh and cut-and-bent rebar totalling 71,725 t. The Karabük OSB second plant extends that construction-steel programme to Karabük.

Karabük · Karabuk Organized Industrial Zone

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Çelikoğlu Demir Çelik San. ve Tic. A.Ş.

Cold-Drawn Steel Bars

Steel Product

The homepage lists cold-drawn square, flat, round and hex bars. About states 40,000 t/year cold-drawing capacity and about 400 employees. A separate cold-drawing plant in Karabük OSB is named in the contact block. These bars sit in the certified specialty-steel programme.

Karabük · Karabuk Organized Industrial Zone

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Çelikoğlu Demir Çelik San. ve Tic. A.Ş.

Elevator Guide Rails

Steel Product

The homepage lists T45–T50–T70–T82–T89–T90–T125 elevator guide rails, with details on celikray.com. Manufacture sits in the Karabük OSB specialty-steel programme. About ties exports to 40+ countries and 250,000 t/year hot rolling to the same mill.

Karabük · Karabuk Organized Industrial Zone

Çelikoğlu Demir Çelik San. ve Tic. A.Ş.

Hot-Rolled Steel Bars

Steel Product

The homepage lists hot-rolled square, flat, round, hex and T-bar with certified, customisable production. About cites 250,000 t/year hot-rolling capacity on a 180,000 m² Karabük OSB site. The menu splits flat, square, round, hex, T-bar and special bars. About also states an ISO Second 500 industrial ranking.

Karabük · Karabuk Organized Industrial Zone

Yolbulan Demir Sanayi ve Ticaret A.Ş.

Deformed Bar

Steel Product

The published range includes deformed bar, billet, round bar, wire rod, NPI/NPU/IPE/HEA/HEB sections, angles and rails. The Karabük OSB mill (Hamzalar Mevkii, Zobran Village No:8) is shown on rolling-mill photos. The company states it is a major KARDEMİR shareholder with priority offtake and a nationwide marketing network. Deformed bar is the reinforcing-steel item in that list.

Karabük · Karabuk Organized Industrial Zone

Yolbulan Demir Sanayi ve Ticaret A.Ş.

NPI / NPU / IPE Sections

Steel Product

The product menu lists NPI, NPU, IPE (medium/wide), HEA and HEB beams and angles separately. The Karabük OSB rolling mill is published as the production site for this structural range. Yolbulan also states it markets KARDEMİR products nationwide. The section group is aimed at construction and industrial steel supply.

Karabük · Karabuk Organized Industrial Zone

Yolbulan Demir Sanayi ve Ticaret A.Ş.

Billet and Wire Rod

Steel Product

Billet and coil/wire rod appear with deformed and round bar on the product list. Karabük OSB photos show the rolling-mill building marked YOLBULAN A.Ş. About names iron and steel as the core activity; the Gebze warehouse supports logistics. Billet and wire rod are the semi-finished items in that mill-and-trade programme.

Karabük · Karabuk Organized Industrial Zone

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Aygünsan Demir Çelik A.Ş.

Flat Bar

Steel Product

The homepage lists flat bar from 12x3 to 220x20 mm. The rolling-mill page splits three lines: heavy section 100x20–220x20 mm, medium 40x10–150x50 mm, light 12x3–50x10 mm. Output covers hot-rolled and cold-drawn specialty steels with a stated 500,000 t/year capacity. The certificates page publishes ISO 9001:2015 and a TSE document.

Karabük · Karabuk Organized Industrial Zone

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Aygünsan Demir Çelik A.Ş.

Round Bar

Steel Product

Round bar is listed 6–150 mm on the homepage. Mill bands are 80–150 mm (heavy), 30–80 mm (medium) and 10–30 mm (light). Cold-drawing shops are part of the specialty-steel programme. In 2020 a 150,000 t/year induction meltshop was commissioned.

Karabük · Karabuk Organized Industrial Zone

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Aygünsan Demir Çelik A.Ş.

Square Bar

Steel Product

Square bar is listed 10x10–120x120 mm on the homepage. Heavy, medium and light mills cover 50x50–120x120, 30x30–80x80 and 10x10–30x30 mm. Sites include the 2017 Karabük OSB third plant (40,000 m² covered) and the city mill. Customer-specific chemistry and mechanics can push the grade count above 1,000.

Karabük · Karabuk Organized Industrial Zone

Alter Demir Çelik

Steel Billet

Steel Product

Alter Demir Çelik produces steel billets from scrap in Karabük OSB. The About page states a 110,000 m² site and 1,000 tonnes of daily billet capacity. The published mission frames scrap-to-billet production as a sustainable, environment-friendly route. The contact address is Organized Industrial Zone, 1st Street No:3, Karabük.

Karabük · Karabuk Organized Industrial Zone

Alter Demir Çelik

Reinforcing Bar

Steel Product

Rebar is listed as a separate product on the homepage and products menu. Production is tied to the Karabük OSB billet line; About cites 1,000 t/day billet capacity and scrap-based steelmaking. The rebar URL is a WooCommerce entry without a published size table, so diameters are not invented. Reinforcing bar is named among the mill’s steel types.

Karabük · Karabuk Organized Industrial Zone

Işık Çelik A.Ş.

Deformed Reinforcing Bar

Steel Product

Deformed reinforcing bar for reinforced concrete, produced in multiple diameters. Standards: TS708 2010, TS EN ISO 15630-1, BS4449:2005 and NF A 35-016-1. Grades S420, B420B, B420C, B460B, B500B, B500C (TS708:2010 / BS4449:2005). Lengths 6,000 mm, 9,000 mm, 11,800 mm and 12,000 mm. Published diameters run from 6.0 mm to 32.0 mm (1/4”–1.1/4”).

Karabük · Karabuk Organized Industrial Zone