A provisional duty is imposed for iron (other than cast iron) or steel seamless pipes as a result of the investigation which was initiated upon the complaint lodged by domestic firms Sardoğan and supported by Tufanoğlu Boru Metal Mak. San. ve Tic. Ltd. Şti., Kalibre Boru San. ve Tic. A.Ş., Borusan Mannesmann Boru Sanayi ve Ticaret A.Ş. and Antes Çelik Boru San. Tic. Ltd. Şti.. Collateral rate changes between 22,15% and 50,35% of CIF value.