硬聚氯乙烯建筑排水管 PVC-U
介绍了硬聚氯乙烯排水管的优越性及施工安装中的注意事项。
The advantage of UPVC plastics drain pipe and points for attention in fixing it are put forward.
近年来硬聚氯乙烯排水管正在我国迅速推广使用，但因多数施工人员对其安装工艺要求尚不熟悉，也带来了一些质量问题。
More and more UPVC drainage pipes have been put into application recently in China, yet the quality suffers due to the worker's unfamiliarity with the installation process.
从普通排水管系的工作特性出发，分析了硬聚氯乙烯螺旋单立管的工作原理及其优点。
Proceeding with the working character of building drainage system, the principle of PPI is analyzed in the paper.
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