| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive blade member which can obtain a high drainage function or fluid conveyance performance even when installed in a narrow underfloor space, which can prevent reduction in seal water and which is excellent in durability, a piping unit, and a piping structure.SOLUTION: A blade member 44 is attached to a piping unit X1 which includes a straight pipe part 36 having a channel formed in a vertical direction and making wastewater 22 flow down, and a curved pipe part 35 connected to a downstream side of the straight pipe part 36 and changing a direction of the channel for the wastewater 22 from the vertical direction to a horizontal direction. A flow straightening surface 26p for performing orientation of a flow by regulating vertically-downward downflow of the wastewater 22 comprises a spiral blade 26 which is spirally formed around the central axis of the straight pipe part 36, and an attachment part 45 which makes the spiral blade 26 be attached along an inner peripheral surface of the straight pipe part 36. |
