... Rail, Railroad Steel Rail, Railway TrackStandard: BS, DIN, GB, JISGrade: 55Q, Q235, 45Mn, 50Mn, 51Mn, U71, ... according your requirement.Material: 55Q or Q235Standard: GB/T11264-89, YB222-63 or Other 2,Heavy ... RailSize: 33kg, 38kg, 43kg, 50kLength: 12m, 12.5m, 18m, 24m, 25m, 36m or the other ... according your requirement.Material: 50Mn or U71MnStandard: GB/T699-1999, GB2585-2007, GB2585-81 BS11- ...