The pipe bursting method is fast and non-invasive. Using the existing pipeline as a guide, the hydraulic pipe-bursting system cuts through the existing pipe while at the same time pulling a new 
#polyethylene into place behind it. Various 
#lead cutter heads can be used to cut through the old pipe i.e. cast, ductile 
#iron #steel and 
#concrete as well as 
#clay #plastic or 
#fibre #cement