本规范涵盖用于生产和运输石油、天然气和非饮用水的PEX管线管。本规范不包括用于氯化水服务的管道。管道拟用于新结构、结构额定压力衬管、管线延伸以及地上和埋地管道应用的维修。本规范涵盖的设备如下所示:a）PEX管线管；b） 配件；c） 现场安装用金属法兰耦合器和用作内径适配器的PEX面法兰。

This specification covers PEX line pipe used for the production and transportation of oil, gas, and nonpotable water. This specification does not cover pipe for chlorinated water service. The piping is intended for use in new construction, structural pressure-rated liner, line extension, and repair of both aboveground and buried-pipe applications. Equipment covered by this specification is listed as follows:a) PEX line pipe;b) fittings;c) metallic flange couplers for field installations and PEX face flanges used as internal diameter adapters.