1.Steel heavy rail 2.Standard: GB-11264, YB222-63 3.Grade:Q235/55Q ... .Size: 38kg/m, 43kg/m, 50kg/m Light rail,Heavy steel rail,Crane rail Specifications 1Standard:GB11264-89, YB222-63, GB2585-20072Size:6kg ... /50Mn5Certificate:ISO, MTC, SGS6Delivery term:5-25 days7Packaging: 1. Light rail:Size: 6kg/m, 8kg/m, 12kg/m, 15kg/m, 18kg ...