| 摘要 |
A process for sanitising piping is disclosed. The piping open at least at two ends is dried with pre-heated air, inner coatings are removed by a flow of abrasive medium, the piping is if required heated with pre-heated air and finally provided with an inner coating made of a viscous hardenable coating material. In order to achieve a conduction quality comparable to that of new piping with simple technical means and without polluting the environment, air, abrasive medium and coating material are blown into the piping through one end or are sucked through the piping, so that there is always a negative pressure in the piping.
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