◇ Asil Celik Sanayi ve Ticaret AS
◇ Assan Galvaniz San ve Tic AS
◇ Bant Boru Sanayi ve Ticaret AS
◇ Birlik Galvaniz Sac Sanayi ve Ticaret As
◇ Borcelik Celik Sanayii Ticaret AS
◇ Borusan Mannesmann Yatirim Holding AS
◇ Cebitas Demir Celik Endustrisi AS
◇ Cemtas-Celik Makina Sanayi ve Ticaret AS
◇ Colakoglu Metalurji AS
◇ Demirsan Haddecilk San Ve Tic AS
◇ Diler Demir Celik Endustri ve Ticaret AS
◇ Ege Celik Endustrisi San ve Tic AS
◇ Ege Metal Demir Celik Sanayi ve Ticaret AS
◇ Erbosan-Erciyas Boru Sanayi ve Ticaret AS
◇ Eregli Demir ve Celik Fabrikalari TAS（Erdemir）
◇ Iskenderun Iron & Steel Works Co （Isdemir）
◇ Izmir Demir Celik Sanayi AS
◇ Kalibre Boru San ve Tic AS
◇ Kaptan Demir Celik Endustrisi ve Ticaret AS
◇ Kardemir-Karabuk Demir Celik Sanayi ve Ticaret AS
◇ Kerim Celik Mamulleri Imalat ve Ticaret AS
◇ Kroman Steel Industries Co （Kroman Celik San AS）
◇ Kurum Demir San Ve Tic
◇ lcdas Celik Enerji Tersane ve Ulasim Sanayi AS
◇ Makina ve Kimya Endustrisi Kurumu
◇ Metalenerji AS
◇ Metas Izmir Metalurji Fabrikasi Turk AS
◇ MMZ Onur Boru Profil Uretim San. ve Tic. AS
◇ Noksel Celik Boru Sanayi AS
◇ Nurmet Celik Sanayi ve Ticaret AS
◇ Nursan Celik Sanayi ve Haddecilik AS
◇ Ozborsan Tube Industry Inc
◇ Petek Pipe Ind Co
◇ Sollac Ambalaj Celigi
◇ Tezcan Galvanizli Yapi Elemanlari Sanayi ve Ticare
◇ Tuba Metal & Galvanization Ind. Cons. & Trade Ltd
◇ Ucel Haddecilik Sanayi ve Ticaret AS
◇ Umran Steel Pipe Inc
◇ Yazici Demir Celik San Ve Tic AS
◇ Yildirimli Metal San ve Dis Ticaret AS