The Automatic SPR New trenchless pipeline renewal method

The Automatic SPR is new trenchless pipeline renewal method avoided works in the host pipe. This method is consisting of two original systems, the winding and grouting system. The winding system is automatically connecting the PVC profile to the end of spiral rehabilitated pipe with new machines. The grouting system is simultaneously injected the SPR mortar to annular space between the host pipe and rehabilitated pipe. The winding and grouting speed are remotely controlled on the ground. In 2010, the winding system was installed Japanese constructions, and proven the algorithmic formula of the speed in these constructions.