m heavy rail in Φ700 mm mill

Abstract  The 50 kg/m heavy rail was developed by Φ700 mm×1/Φ700 mm×3 medium section mill in Hebei Yongyang Special Steel Group Co.,Ltd.The rolling scheme,pass system and special pass design for medium section mill were introduced.The product size and properties met the national standard,and batch production was realized. Key words： 50kg/m heavy rail      pass design      Φ700 roll      Received: 26 March 2014      Published: 01 July 2015