厕所高水箱冲洗管一般由灯叉弯、90°弯和U型弯组成。按便器和水箱的不同位置可分T型、H型两种(图1、 2)。使用硬聚氯乙烯塑料管做高水箱冲洗管,比用铜管经济方便。现介绍硬聚氯乙烯塑料管的加工与安装方法。一、手工煨制冲洗管 1.胎具:胎具有调直胎(图3)、灯叉弯胎(图4)、90°弯胎(图5)和U型弯胎(图6)。这些胎具的隔挡板为厚2～3毫米、宽25毫米的扁钢,底板为厚4～6毫米钢板,把隔挡板 High toilet flushing pipes for toilets generally consist of a light fork bend, a 90° bend and a U-bend. According to the different positions of toilet and water tank can be divided into T-type, H-type two (Figure 1, 2). The use of rigid polyvinyl chloride plastic pipes for high tank flushing pipes is more economical than using copper pipes. Now we introduce the processing and installation methods of rigid polyvinyl chloride plastic pipe. First, hand-manufactured washing tube 1. Pregnancy: The tire has a straightening tire (Figure 3), a light fork bent tire (Figure 4), 90 ° bent tire (Figure 5) and U-shaped bent tire (Figure 6). The baffles of these tyres are flat steels 2 to 3 mm thick and 25 mm wide, the bottom plates are 4 to 6 mm thick steel plates, and the baffles