The Handan Steel revamping project which reconstructs the steel rolling system into profiled steel system is a comprehensive process line for manufacturing heavy rail and large profiled steel, it is also the third heavy rail line which undertaken by CISDI in China. The major breakdown mills of main rolling line (BD1 and BD2) are supplied by CISDI on EP basis, they are also the largest breakdown mills with roller diameter up to Ф1350mm, roller length to 2300mm, and net height of rolling mill to 8445mm, and are capable to roll rectangle bar with max specifications up to 325*280mm and shaped bar up to 750*370mm.