... Q235, 45Mn, 50Mn 12kg steel rails Steel Rail1. Light Rail Specification: 12kg/m, 15kg/m, 18kg/m, 22kg ... 6-12m Material: Q235, 50Q, 55Q Standard: YB222-63, GB11264-892 GB Heavy Rail Specification: 38kg/m, 43kg ... 9m Material: 55Q Standard: South Africa Standard6. English Standard Rail Specification: 60A, 60R, 70A, 75A, 75R, 80A, ... Standard: GB3426-82 6-30kg railroad light steel rail for farm or mining steel ...