BS ISO 4065:2018规定了热塑性塑料管道的标称壁厚en和标称外径dn之间的关系。它适用于沿管道全长具有恒定圆形横截面的固体壁热塑性塑料管，无论其制造方法、成分或预期用途如何。交叉引用:ISO 497:1973ISO 11922-1ISO 3ISO 3126:2005（R10）Ed 2ISO 161-1ISO 2944ISO 497购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO 4065:2018 specifies the relationship between the nominal wall thickness en and the nominal outside diameter dn of thermoplastics pipes.It is applicable to solid-wall thermoplastics pipes of constant circular cross-section along the whole length of the pipe, whatever their method of manufacture, their composition or their intended application.Cross References:ISO 497:1973ISO 11922-1ISO 3ISO 3126:2005 (R10) Ed 2ISO 161-1ISO 2944ISO 497All current amendments available at time of purchase are included with the purchase of this document.