| 摘要 |
PURPOSE:To spread pipes even in a narrow place such as a staircase and to realize an easily constructible snow-removing system. CONSTITUTION:A radius for spreading a U-pipe 1 is made small by using a copper pipe for a U-pipe, and work in a field is decreased by manufacturing a bent pipe in advance. In addition, one of the ends connected to each other of copper pipes 2, 3, 4, 5, 6, 7 and 8 including U-pipes 1 is straightened, and the other is flared. According to the constitution, the other can be connected by fitting even if it is cut in any length in accordance with an area of the space. |
