本文件规定了由基于不饱和聚酯树脂（UP）的玻璃纤维增强热固性塑料（GRP）制成的管道系统部件的性能。它适用于所有类型的供水、排水和污水处理，无论有无压力。供水类型包括但不限于原水、灌溉、冷却水、饮用水、盐水、海水、发电厂压力管道、加工厂和其他水基应用。本文件适用于GRP UP管道系统，其带有或不带有端部推力承载能力的柔性或刚性接头，主要用于直埋安装。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies the properties of piping system components made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP). It is suited for all types of water supply, drainage and sewerage with or without pressure. Types of water supply include, but are not limited to, raw water, irrigation, cooling water, potable water, salt water, sea water, penstocks in power plants, processing plants and other water-based applications. This document is applicable to GRP UP piping systems, with flexible or rigid joints with or without end thrust load-bearing capability, primarily intended for use in direct buried installations.All current amendments available at time of purchase are included with the purchase of this document.