Pipe bursting is a trenchless method of replacing in-situ buried pipelines such as water, sewer or gas pipelines. Brittle pipelines made of clay, cast iron, concrete or PVC are fragmented in-situ by pulling a bullet shaped bursting head through the pipeline. The bursting head has a larger diameter than the existing pipeline and splits the pipeline using static or hydraulic force while being pulled through the pipe. A new polyethylene pipeline is attached to the trailing end of the bursting head and is installed in the cavity created by the bursting head. Lengths up to 500 lineal meters can be installed in diameters ranging from 100mm up to 1000mm. In certain situations the pipeline may be ‘upsized’, meaning a larger diameter pipeline may be inserted in place of the existing pipeline.