不管是柔性防水套管还是刚性防水套管最主要的填充材料都是混凝土，柔性防水套管穿墙时，一般与墙壁相平不需要伸出这是因为柔性防水套管的内部已经有比较好的密封结构而刚性的却没有。柔性防水套管必须是预先埋置在混凝土内的，钻孔后再进行放置等于摆设。穿管安装完成后，管道与套管间隙填塞柔性防水材料。

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