china coal 0001 Introduction of Q235B / 50Q / 55Q Railway Track Light Steel Rail Normally, steel rail is devide into light rail ,heavy rail and crane rail   1)Light rails: 6kg/m,9kg/m,12kg/m,15kg/m,18kg/m,22kg/m, 24k/mg, 30kg/m Material: Q235B / 50Q / 55Q Length of each piece: 6m~12m Executive standard: refer to GB11264-89 2)Heavy rails: 38kg/m, 43kg/m, 50kg/m, 60kg/m Material: U71Mn / 50Mn / 44Mn Length of each piece: 12m,12.5m Executive standard: refer to GB2585-2007 3)Crane rails: QU70,QU80,QU100,QU120 Parameter of 38kg 43kg 50kg Heavy Railway Steel Rail Model Head  width Rail  height Web  Thickness Bottom  Width Weight Material Rail length 38kg/m 68mm 134mm 13mm 114mm 38.733 kg/m U71Mn/U71 /45Mn 12,12.5m 43kg/m 70mm 140mm 14.5mm 114mm 44.653 kg/m U71Mn/U71 /45Mn 12,12.5m 50kg/m 70mm 152mm 15.5mm 132mm 51.514 kg/m U71Mn/U71 /45Mn 12,12.5m Material: U71Mn  Length of each piece: 12m,12.5m Executive standard: refer to GB3426-82 Parameter of Q235B / 50Q / 55Q Railway Track Light Steel Rail Standard:GB11264-89 size Head(mm) Height (mm) Bottom (mm) Web (mm) Weight (kg/m) Material (mm) Length (mm) GB6KG 25.4 50.8 50.8 4.76 5.98 Q235B 6-12 GB9KG 32.1 63.5 63.5 5.9 8.94 Q235B 6-12 GB12KG 38.1 69.85 69.85 7.54 12.2 Q235B/55Q 6-12 GB15KG 42.86 79.37 79.37 8.33 15.2 Q235B/55Q 6-12 GB22KG 50.3 93.66 93.66 10.72 22.3 Q235B/55Q 6-12 GB30KG 60.33 107.95 107.95 12.3 30.1 Q235B/55Q 6-12 Standard:YB222-63 8KG 25 65 54 7 8.42 Q235B 6-12 18KG 40 90 80 10 18.06 Q235B/55Q 6-12 24KG 51 107 92 10.9 24.46 Q235B/55Q 6-12