| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a reforming method for a drainage pipe, enabling reforming of a joint part of an appropriation branch pipe piped in each floor. <P>SOLUTION: According to this reforming method for a drainage pipe, abrasive is jetted from a tip part of a blast nozzle device 13 obliquely upward to the horizontal direction, and sprayed to the inner wall in the joint part 12a to be polished, and simultaneously with polishing for the joint part or separately a drainage vertical main pipe 10 is polished. After that, paints is jetted from a spray nozzle device obliquely upward to the horizontal direction, and sprayed to a part of the joint part 12a, the inner surface of which is polished, thereby painting the part, and simultaneously with painting for the joint part 12a or separately the inside of the drainage vertical main pipe 10 is painted. <P>COPYRIGHT: (C)2004,JPO</p> |
