Diler Holding

Diler Holding is a major Turkish industrial conglomerate and steel manufacturer headquartered in Istanbul, Turkey. Founded in 1949, the group operates integrated steel plants, energy production facilities, port terminals, investment banking services, and luxury tourism resorts across Turkey. The company manufactures steel billets, wire rods, ribbed rebar, spooled coils, cold drawn wire, prestressed concrete strands, and prestressed concrete wire. Operating key subsidiaries such as Diler Demir Celik in Gebze Dilovasi, Yazici Demir Celik in Iskenderun Sariseki, and DNA PC Strand, the conglomerate exports products to over 99 countries worldwide. In addition to heavy steel manufacturing, Diler Holding generates electricity via thermal, hydroelectric, and solar power plants, including Atlas Enerji and Dim Power Plant. Its port operations in Hereke and Iskenderun handle high-tonnage cargo, bulk logistics, and warehousing services. With more than 5,000 employees, Diler Holding serves global construction, manufacturing, and industrial sectors with certified steel products meeting ISO and international quality standards.