Through Diler Iron & Steel, Yazıcı Iron & Steel, and DNA PC Strand, Diler Holding embodies the high-volume production capability of the iron and steel industry, maintaining its pioneering position with large-scale manufacturing capacity across regional and national markets.
Core Activities
Export-Import &
Domestic Market Management
EXPORTS
Established in 1984 to promote Diler Group’s products in global markets and increase its foreign trade volume, Diler Foreign Trade Inc. continues to steadily expand its international operations. By being included each year in the list of “Foreign Trade Capital Companies” announced by the Ministry of Trade, the company reinforces its strong position in global commerce. It effectively exports billet, plain and ribbed rebar, wire rod, prestressed concrete strand, and prestressed concrete wire, and continues to sustain its strong presence in the sector through its broad customer portfolio.
IMPORTS
We procure the raw materials, consumables, spare parts, machinery, and equipment required by our Group companies, particularly our iron and steel and ship recycling facilities, from approved local and international suppliers. We conduct our procurement processes with the utmost diligence in line with the principles of quality, sustainability, and efficiency. We regularly share up-to-date information regarding the products we purchase, sell, and make such data accessible on our website in line with our commitment to transparency.
DOMESTIC MARKET
With its deep-rooted experience in the construction steel industry, high quality standards, and reliable production processes, Diler Group maintains its strong position in Türkiye. Ribbed rebars with diameters ranging from Ø8 to Ø40 mm are produced in our integrated facilities in compliance with national and international standards and are offered to the market through our extensive nationwide distribution network. Diler Iron & Steel offers a broad product portfolio that includes high and medium carbon steels used in the production of springs, wire rope, tire cord wire, prestressed concrete wire and strand, and cable armoring wire; low carbon steels used in the production of nails, fencing wire, welded wire mesh, staples, transmission wires, and cable armoring wire; free-cutting steels suitable for machining processes; cold forming steels used in the production of screws, bolts, nuts, and rivets; as well as special quality steel wires used in welding electrode manufacturing. The success of the Group companies is not limited to product quality; it is further strengthened by a sustainable business model, an integrated production structure, and a customer-focused approach. The domestic market sales organization effectively delivers the products manufactured at Yazıcı Iron & Steel in İskenderun-Payas and Diler Iron & Steel in Dilovası to projects, contractors, and industrial enterprises across Türkiye. Through this integrated structure, Diler Group continues to reinforce its leadership position in the sector on a lasting basis.
Diler Iron and Steel
Founded in 1954 in Karabük to meet Türkiye’s growing demand for construction steel, Diler Iron & Steel has, since its establishment, positioned itself as one of the strongest and most reputable steel producers in the country through its industry experience, production strength, and steady growth. From its incorporation, the Company has contributed value to the industry and continuously enhanced its production capacity through planned investments.
In 1978, the Company relocated to Gebze Dilovası and commissioned its steel plant and bar rolling mill investments. In its modern facilities established on a total area of 108,000 m² with a closed area of 63,500 m², it strengthened its integrated production infrastructure.
In 2008, the wire rod rolling mill, which significantly increased production capacity and product diversity, was commissioned just 2 kilometers from the existing site. With this investment, covering a total area of 112,000 m² and a closed area of 40,000 m², the Company further enhanced its production capabilities and reinforced its integrated structure.
The modernization of the wire rod rolling mill in 2016 and the commissioning of bell-type wire rod annealing furnaces in 2018 advanced its production technology. Through investments that increase process efficiency and elevate sustainability and quality standards, the Company further strengthened its technological infrastructure.
Today, Diler Iron & Steel operates as an integrated iron and steel facility with its main production units, including a steel plant, bar rolling mill, wire rod rolling mill, and oxygen plant, as well as dust collection systems, compressed air and water facilities, technical workshops, and environmental infrastructure units.
The Company invests in environmentally responsible systems and advanced technology solutions, manages its production processes with high efficiency, and continuously improves product quality. In line with this holistic vision, we shape the sector through our sustainable production approach and differentiate ourselves with an environmentally compatible industrial model.
With our industrial expertise and sustainability vision, we continue to steadily enhance our production strength. With an expert workforce of approximately 1,000 employees, we focus on safe, efficient, and sustainable growth.
We continue our operations without compromising our principles of trust, quality, and continuity, reinforcing our position as one of the well-established and leading manufacturers in the Turkish steel industry. With our high-quality standards and customer-focused approach, we rank among Türkiye’s leading exporters in global markets and deliver lasting added value to industrial production.
Yazıcı Iron and Steel
Established in 1991 in İskenderun Sarıseki with the strong vision and experience of Diler Holding, Yazıcı Iron & Steel was founded to respond to the needs of Türkiye’s rapidly developing construction sector. Shortly after its establishment, the Company significantly increased its production capacity through a modernization initiative launched to meet rising sectoral demand and through the commissioning of a high-capacity steel plant investment in 1994.
Today, our integrated production facility, operating on an area of approximately 180,000 square meters, stands out as one of Türkiye’s most technologically advanced steel production centers. With an annual liquid steel production capacity approaching 1,050,000 tons and finished steel production nearing 1,000,000 tons, Yazıcı Iron & Steel redefines competitive standards in the sector.
Our facility delivers high performance and consistent quality even under the most demanding production conditions, supported by modern production lines ranging from a 90-ton high-capacity electric arc furnace to a six-strand continuous casting machine. Our rolling mill facilities offer a broad and flexible production range through the first rolling line providing products in the 8–50 mm range and the Yazıcı 2 Rolling Mill investment with an annual capacity of 268,000 tons.
The Yazıcı 2 facility plays a critical role in high-quality production with its 40 ton per hour reheating furnace, triple semi-continuous preparation stands, thirteen double continuous rolling stands, controlled water-cooling unit, and 30-meter-long cooling bed.
Port infrastructure constitutes one of Yazıcı Iron and Steel’s most significant logistical advantages. Through our two ports, with an annual handling capacity of 15,000,000 tons and capable of accommodating vessels up to 180,000 DWT, we manage high-volume shipments in a flexible and efficient manner. This strong logistical capability enables our products to reach both domestic and export markets in a timely, reliable, and efficient way.
Our gas plant, which forms one of the cornerstones of our production quality, operates at the center of our steelmaking processes with a capacity of 220 tons per day of gaseous oxygen, 6.8 tons per day of liquid oxygen, 300 tons per day of gaseous nitrogen, 6 tons per day of liquid nitrogen, and 8.5 tons per day of liquid argon. Through this high-capacity production support, we ensure the uninterrupted supply of gases that are critical to steel production at international quality standards, safeguarding production continuity while consistently enhancing product quality.
Our product portfolio includes carbon steels, spring steels, free-cutting steels, and structural steels, as well as unalloyed and low-alloy, low and medium carbon steels manufactured in compliance with national and international standards. We produce plain and ribbed reinforcing bars in the 8 mm to 50 mm diameter range in accordance with high quality standards and deliver them to global markets with quality and reliability through our extensive export network extending from Türkiye to the Middle East, the Far East, Europe, North Africa, and the Americas.
Since our establishment, we have steadily enhanced the sustainability and efficiency of our production processes through continuous investments, advanced technological applications implemented in our facilities, and ongoing improvement initiatives. With the comprehensive modernization investments completed in 2007, we further strengthened Yazıcı Iron and Steel’s leading position in the sector by elevating the capacity and quality standards of both our rolling mill and steel plant facilities.
Our corporate governance and quality approach are shaped within the framework of an Integrated Management System aligned with international standards such as ISO 9001, ISO 14001, ISO 45001, and ISO 50001. Our diligence in environmental responsibility, occupational health and safety, and energy efficiency forms the foundation of our sustainable production approach.
Each member of the Yazıcı family consists of professionals who are highly knowledgeable about the dynamics of the Turkish iron and steel industry and distinguished by their expertise and field experience. Among our core priorities are delivering the highest quality to our customers, developing trust-based and long-term collaborations with our business partners, and creating value by closely following sectoral innovations.
With its technological strength, high production capacity, advanced logistics capabilities, internationally standardized product quality, and deep-rooted industry experience, Yazıcı Iron and Steel continues to serve as a strong cornerstone of Türkiye’s steel production. With a broad product range extending from reinforcing bars to specialty steels, we remain committed to building the future of our country and the world with determination.
DNA PC Strand
Established in 2019 under the umbrella of Diler Holding, DNA PC Strand brings together more than 75 years of steel expertise with innovative technology. Operating since 1949, Diler Holding continues to create value across a broad range of sectors, from steel production to foreign trade, and from energy to port operations.
At our facility located in the Makinacılar Organized Industrial Zone in Dilovası, Kocaeli, with a closed area of 30,000 m², we manufacture high quality prestressed concrete wire and prestressed concrete strand in compliance with ASTM, EN, BS standards and specific customer requirements. In our automation-controlled surface treatment line, supported by environmentally friendly regeneration and water treatment systems and designed with an annual capacity of 100,000 tons, we manage our production processes with precision and care.
With an annual production capacity of 60,000 tons of prestressed concrete strand and 10,000 tons of prestressed concrete wire, we continue our investments and are accelerating our efforts to increase our total capacity to 100,000 tons.
Through the integrated structure established with the steel plant and wire rod rolling mills owned by Diler Holding, we manage the journey of steel from scrap to finished product on an end-to-end basis with high efficiency. This integrated approach constitutes one of our strongest competitive advantages in the sector.
We continue to grow steadily in both the domestic market and export markets, further strengthening our position in the industry each day.