Process for coating inner wall and outer wall of pipeline and equipment

The invention discloses a process for coating an inner wall and an outer wall of a pipeline and equipment suitable for the process. By adopting the process and the equipment, the coating of the inner wall and the outer wall of the pipeline can be once completed through integral plastic dipping so as to facilitate the large-scale streamline production; in addition, coating layers of the inner walland the outer wall of the pipeline can be guaranteed to be uniform, and the coating quality also can be controlled; moreover, the utilization rate of plastic powder can be effectively improved, thereby the production cost is reduced. The invention has reasonable and continuous process and lower production cost and is beneficial to greatly improving the production speed and forming large-scale continuous production.