1.Steel heavy rail 2.Standard: GB-11264, YB222-63 3. ... 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- ... 1. Light rail:Size: 6kg/m, 8kg/m, 12kg/m, 15kg/m, 18kg/m, 22kg/m, 24kg/m, 30kg/mMaterial: Q235B ...