... rails Railway Rails Railroad Steel Rail, Railway Track Standard: BS, DIN, GB, JIS Grade: 55Q, Q235, 45Mn, 50Mn steel railsSteel Rail1. Light Rail ... 12m Material: U71Mn Standard: GB3426-824. Japan& Korea Standard Rail Specification: 37A, 50N, CR73 Unit Weight:37.2kg/m, ... Length: 9m Material: 55Q Standard: South Africa Standard6. English Standard Rail Specification: 60A, 60R, 70A, 75A, 75R, 80A, 80R, ...