| 摘要 |
PROBLEM TO BE SOLVED: To provide a piping structure capable of preventing a collection member and a coating member from coming off from a drain plug even when a large volume of water drained.SOLUTION: A drain plug 1 has an inner flange part 5, which is an inner peripheral surface top edge protruding inward, and a step part 6, which is substantially horizontally formed to face inward below the inner flange part 5. A protrusion part 18 protrudes outward from each side of a marginal part 16 of a strainer 15 as a collection member. The protrusion part 18 is laid on the step part beyond the inner flange part 5 by elastically deforming, when the strainer 15 is fixed to the drain plug 1.SELECTED DRAWING: Figure 4 |
