| 摘要 |
PROBLEM TO BE SOLVED: To easily ensure a dimension of specified embedding depth of a main pipe by providing a saddle part connected and fixed on an outer face of the main pipe and a drilled hole pipe part on which a cutter is mounted, providing an operation part operating the cutter on the opposite side to the drilled hole pipe part, and providing a branch pipe part taking out branch on an end part side. SOLUTION: When a branch pipe is taken out of an embedded main pipe 1, a saddle part 10 of a branch saddle is connected with and is fixed on a side of the main pipe 1 using a clamp 11, a hole drilling cutter 30 mounted in a drilled hole pipe part 20 is operated from an operation part 21 to move the hole drilling cutter 30, the side of the main pipe 1 is cut out, and a hole is drilled in it. Consequently, a necessity that the main pipe 1 is embedded extra deeply is eliminated, the piping and digging works of the main pipe 1 are facilitated, and branch taking out piping from the main pipe 1 can be done easily. Moreover, the branch saddle 1 is formed by thermoplastic resin, and a heating wire 12 is embedded in an inner face of the saddle part 10 so that it can be fused and fixed on the embedded main pipe made of thermoplastic resin and branch taking out from a resin pipe can be done easily. |
