燃气用塑料管系统 融接和机械连接的未增塑聚酰胺（PA-U）管系统 第3部分：管件

[中文适用范围]： 本文件规定了未增塑聚酰胺（PA-U）管件的物理和机械性能，这些管件是根据 ISO 16486-1 制定的，旨在埋设并用于输送气体燃料。它还规定了引用测试方法的测试参数。ISO 16486 系列适用于 PA-U 管道系统，其组件通过熔接接头和/或机械接头连接。特别是本文件规定了管件的尺寸特性以及标记要求。结合 ISO 16486 系列的其他部分，本文件适用于 PA-U 管件、其接头、与 PA-U 组件的接头、与其他材料机械接头的接头，以及以下类型的接头：- 熔接接头（电熔接头和对焊熔接头），以及 - 过渡接头。 [外文原描述]： This document specifies the physical and mechanical properties of fittings made from unplasticized polyamide (PA-U) in accordance with ISO 16486-1, intended to be buried and used for the supply of gaseous fuels. 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 particular, this document lays down dimensional characteristics and requirements for the marking of fittings. In conjunction with the other parts of the ISO 16486 series, this document is applicable to PA-U fittings, their joints, joints with components of PA-U and joints with mechanical fittings of other materials, and to the following fitting types: — fusion fittings (electrofusion fittings and butt fusion fittings), and — transition fittings.