Please drain the pipe after using.Please storage the pipe in shadow and cool place after use, in case of the pipe aging. When using the telescopic pipe, please extend the pipe firstly; use low hydraulic pressure and small flows to full parts of the pipe, then turn up the hydraulic pressure to the standard. Please, not use high hydraulic pressure firstly with the pipe wrapped together, in case of the pipe being exploded or fractured, because of being stretched suddenly with excessive high hydraulic.