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