通过某高层商住楼群排水系统采用硬聚氯乙烯 (PVC -U)螺旋管 (以下称“螺旋管”)的工程实例 ,对螺旋管与一般PVC -U排水管材 (以下称“光壁管”)的通水能力、噪声、投资、系统设置诸方面进行比较 ,认为在居住建筑排水系统中采用螺旋管优于光壁管 Through a high-rise commercial and residential drainage system using hard polyvinyl chloride (PVC-U) spiral (hereinafter referred to as “spiral”) example of the spiral pipe and the general PVC-U drainage pipe (hereinafter referred to as “light wall tube ”) Of the water capacity, noise, investment, system settings and other aspects of comparison, that the residential building drainage system is better than the spiral pipe wall