... -63 3.Grade:Q235/55Q 4.Size: 38kg/m, 43kg/m, 50kg/m Light rail,Heavy steel rail,Crane rail Specifications ... 1Standard:GB11264-89, YB222-63, GB2585-20072Size:6kg, 9kg, 12kg, 15kg, 22kg, 30kg, 8kg, 18kg, 24kg ... , 38kg, 43kg, 50kg3Length:6-12m4Material:55Q/Q235B/U71Mn/50Mn5Certificate:ISO, MTC, SGS6Delivery term:5 ...