2012 Hot Sale Trenching Machine: 1 30-80HP 2 Max Depth:200cm . 3 Max Width:80cm, . 4 Speed: 50m-500m/hour ... designed by Huhong Machinery Hydraulic Manufacturing adjustable,wherein the maximum depth is 200cm.The trenching speed can reach 50-500m/h ... is seraight in configuration,with the wall sloped and the depth and width unanimous,which is out of the capacity of ...