... GB, JIS Grade: 55Q, Q235, 45Mn, 50Mn 18kg steel rails Steel Rail1. Light Rail Specification: 12kg/m, ... : 50Mn ,U71Mn Standard: GB2585-813. Crane Rail Specification: QU70, QU80, QU100,QU120 Unit Weight: 52. ... Standard: GB3426-824. Japan& Korea Standard Rail Specification: 37A, 50N, CR73 Unit Weight:37.2kg/ ... South Africa Standard Rail Specification: 22,30 Unit Weight: 22.542kg/m, 30.25kg/m Length: 9m ...