... Steel grade: 55Q / Q235 Length: 6m~12m Executive standard: refer to GB11264-89… (2)Heavy rails: 38kg, 43kg, 50kg, 60kg Steel ... / 50Mn and so on Length: 12.5m Executive standard: refer to GB2585-81/QB (3)Crane rails: QU70, QU80, QU100, QU120 ... in our products, please contact us immediately for more clarification. Hope to do business with you in near future. Best Regards, Miss ...