| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a prefabricated piping unit which can be packed easily and is put together compactly and which is excellent in transport efficiency and also can be handled easily in the work for piping. SOLUTION: In regard to a piping unit which is connected beforehand in a factory in accordance with the positions of disposition of water feeding and draining equipment and a base pipe in a building and carried into a place of piping, flexible pipes are provided as secondary-side branching pipes in a plurality connected to the water feeding and draining equipment. These pipes are connected to branch pipes 19 and 27 of headers 14 and 23 each composed of a main pipe and the branch pipes in a plurality erected on the outer peripheral surface of the main pipe, spaced from each other in the axial direction of the main pipe, and they are wound up in a size suited for carriage. In the prefabricated piping unit thus constituted, primary-side piping connected to the headers 14 and 23 from the base pipe and the flexible secondary-side pipes in a plurality are connected through the intermediary of the headers. The flexible primary-side piping and the flexible secondary-side piping are connected in the same axial direction.</p> |
