It is aPre-buried Grouting Pipe SystemSeals for construction joints, cold joints, pipe渗leaks, 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 leak can be sealed by injecting grout through 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. Leak joints can also be sealed using this method.