Our hard joints are specially designed vertical flanges which connect components of a water slide. The gap between the vertical flanges in the bottom part of a pipe is filled with a glue/sealer, so that the surface of the water slide is flat and smooth. A perfectly smooth surface of the water slide ensures comfort of use and minimizes maintenance, as compared to soft joints (where gaps between particular elements are filled with a sealing substance). A dedicated system of locks supports the water slide and keeps its components firmly in position, as fitted.