| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain effects on improvement in workability by eliminating cutting and removal of a floor material for installation or pipe change.SOLUTION: There is provided a piping unit that includes a straight pipe member 10 having a flow passage formed vertically and includes a straight pipe part 2 for letting drain water flow down, and an elbow 4 connected to a downstream side of the straight pipe member 10 and changing the flow passage of the drain water from a vertical direction to a horizontal direction. The straight pipe member 10 is provided with a connection socket 3 with a spiral blade which has an upstream-side end part connected to the straight pipe part 2 and a downstream-side end part connected to the elbow 4, and the straight pipe part 2, the connection socket 3, and the elbow 4 are divided.</p> |
