A new cutterhead configuration for the Grundoburst static pipe bursting system consists of three specially designed bladed, roller cutterheads in succession.
The bladed roller cutting head configuration allows contractors to burst/split large diameter steel and ductile iron pipes when used with larger Grundoburst static bursting systems. The special cutterhead design allows for a smoother host pipe cut and greater protection for the new pipe, the company says. Pulled by a hydraulic bursting unit, the cutterhead’s special cutting wheels split the host pipe. An attached expander spreads and displaces the split pipe into the surrounding soil while simultaneously pulling in the new pipe. The system also features patented QuickLock bursting rods that are linked together, not threaded.