Crane steel rail QU70,QU80,QU100,QU120 Weight:52.8kg/m,63.69kg/m,88.96kg/m,118.8kg/m Material:U71Mn Standard:GB3426-82 Crane steel railQU70,QU80,QU100,QU120Weight:52.8kg/m,63.69kg/m,88.96kg/m,118.8kg/mLength:6m-12mMaterial:U71MnStandard:GB3426-82 crane steel rail