| 摘要 |
PROBLEM TO BE SOLVED: To provide a piping system of a synthetic resin water passage pipe capable of facilitating the execution work and the handling. SOLUTION: The piping system 3 comprises a first water passage pipe 101 forming a main pipe, a second water passage pipe 102 forming a branch pipe, and a joint 2. The joint 2 has a first connection port 401 to which an end 1a of the first water passage pipe 101 is connected, and a second connection port 402 to which an end 1a of the second water passage pipe 102 is connected. Thus, the end 1a of the second water passage pipe 102, and the second connection port 402 with its end 1a being connected thereto have display parts 5a, 5b having the display for identifying the correspondence of the end 1a to the second connection port 402. COPYRIGHT: (C)2010,JPO&INPIT
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