It is aPre-placed Grouting Pipe SystemSealing for construction joints, cold joints, pipe leakage joints, gaps between retaining walls, etc., in concrete. It is very suitable to install grouting pipes between new and old concrete joints. When water seeps into the joints, the leakage can be sealed by injecting grout through the PVC ports set on the surface. This method can seal the joints. The appropriate time for grouting can be chosen after the concrete curing process is completed. Leakage joints can also be sealed using this method.