Abstract: In a method for sealing and/or reconditioning of pipes through spraying a fluid coating material towards the inner wall of the pipe at least one material piece divided in the longitudinal direction thereof held together under pretension to a pipe piece with an outer diameter being less than the inner diameter of the pipe is before the spraying introduced into the pipe to a location for a substantial hole in the pipe wall for covering the hole. The mechanisms for holding it together is then broken so that the pipe piece will bear under pretension against the inner wall of the pipe and form an auxiliary wall over the hole retaining the material sprayed inside the pipe.

Abstract: In a method for sealing and/or reconditioning of pipes through spraying a fluid coating material towards the inner wall of the pipe at least one material piece (10) divided in the longitudinal direction thereof held together under pretension through means (11) to a pipe piece (17) with an outer diameter being less than the inner diameter of the pipe is before the spraying introduced into the pipe to a location for a substantial hole (12) in the pipe wall for covering the hole. The means for holding it together is then broken so that the pipe piece will bear under pretension against the inner wall of the pipe and form an auxiliary wall over the hole retaining the material sprayed inside the pipe.

Abstract: A device for applying an internal coating in tubes (22) comprises a device (6,15) for feeding a coating material (14) to a nozzle (7) and an arrangement adapted to influence the material out of the nozzle (7) towards the inner wall of a tube (22) when the nozzle (7) is moved through the tube (22). This arrangement is adapted to make the nozzle (7) rotate while throwing the coating material fed thereto substantially radially outwardly through apertures (20) arranged substantially radially in the nozzle (7) towards the inner wall (24) of the tube (22). The arrangement comprises, for this purpose, a driving device (10) intended to be arranged outside the tube (22) to be coated and to drive an elongated flexible member (17) to rotate, the end of this member (17) being rigidly connected to the nozzle (7) for rotating thereof.