Very occasionally there will be concrete in the drain which causes repeat blockages. This usually occurs either after building work has happened nearby and builders wash their cement tools into a drain or if the jointing compound of a clayware drain has squeezed into the inside of the drain.
Concrete cutting is an alternative to digging and replacing the pipe. We use titanium cutters on a water propelled spinning cutting face alongside the high pressure water jetter. We cut the concrete alongside visual confirmation of the correct cutting location with our cameras.
Our concrete cutting will remove the concrete obstruction without damaging the pipe and without having to dig.