本文件规定了根据ISO 16486-1由未增塑聚酰胺（PA-U）制成的管道的物理和机械性能，这些管道用于埋地和供应气体燃料。它还规定了它所引用的测试方法的测试参数。 ISO 16486系列标准适用于PA-U管道系统，其组件通过熔焊和/或机械连接连接。 此外，本文件还规定了管道标记的尺寸特征和要求。 符合本文件的管道通常采用机械、电熔或对接熔接技术进行连接。

This document specifies the physical and mechanical properties of pipes 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 of standards is applicable to PA-U piping systems, the components of which are connected by fusion jointing and/or mechanical jointing. In addition, this document lays down dimensional characteristics and requirements for the marking of pipes. Pipes conforming to this document are jointed typically by using mechanical, electrofusion or butt fusion techniques.