本文件规定了非增塑聚酰胺（PA-U）管道系统的适用性要求，该管道系统拟埋置并用于供应气体燃料。它还规定了电熔合和对接熔合接头的定义。本文件规定了试件接头的制备方法以及在这些接头上进行的试验，以评估系统在正常和极端条件下的适用性。它还规定了所指测试方法的测试参数。ISO 16486系列适用于PA-U管道系统，其部件通过熔焊和/或机械连接连接。 与ISO 16486的其他部分一起，本标准适用于PA-U配件及其接头，以及与PA-U部件的接头。购买本文件时可获得的所有当前修改件均包含在购买本文件中。

This document specifies the requirements of fitness for purpose of unplasticized polyamide (PA-U) piping system, intended to be buried and used for the supply of gaseous fuels. It also specifies the definitions of electrofusion and butt fusion joints.This document specifies the method of preparation of test piece joints and the tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions. It also specifies the test parameters for the test methods to which it refers.The ISO 16486 series is applicable to PA-U piping systems, the components of which are connected by fusion jointing and/or mechanical jointing.In conjunction with the other parts of ISO 16486, it is applicable to PA-U fittings, their joints and to joints with components of PA-U.All current amendments available at time of purchase are included with the purchase of this document.