在结实、稳固的沟底，管沟的宽度由施工所需要的操作空间决定，空间大小必须允许能够正常进行管沟底部的正确准备及管沟填埋材料的填埋及夯实等工作，而且还要考虑到管沟开挖费用以及购买填埋材料等费用的经济性。PP管材依照熔接工艺和熔接技巧的请求停止施工操纵的管路体系，在常温常压下应用是不会有任何问题的，在平常施工中常见衔接处会发生爆裂征象或砂眼。

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