... steel rails mine rail , crane rail , railroad steel rail Standard: BS, DIN, GB, JIS Grade: 55Q, Q235, 45 Heavy steel rails Steel Rail1. Light Rail ... 50Mn ,U71Mn Standard: GB2585-81, GB2585-2007vv3. Crane Rail Specification: QU70, QU80, QU100,QU120 Unit Weight: 52.80kg/m, ... : 9m Material: 55Q Standard: South Africa Standard6. English Standard Rail Specification: 60A, 60R, 70A, 75A, 75R, 80A, 80R ...