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。 注1:就本文件而言，术语聚酯树脂（UP）还包括乙烯基酯树脂（VE）。 注？2？符合本文件要求的管道系统也可用于非管道系统- 如果在管道、配件和接头的设计中考虑了环境和支架的影响，则为埋地应用。 注3:本文件也适用于其他安装，如现有管道的滑动衬里修复。 注4:本文件取代的ISO 10467和ISO 10639也在ISO 25780中引用，该文件规定了用于顶升安装的玻璃钢管道的要求。 参考本文件的管道静水压设计要求符合ISO/TS？20656-1的要求，以及ISO？2394和EN？1990中详述的结构可靠性的一般原则。这些国际标准提供了协调设计实践的程序，并解决了失效的可能性以及失效的可能后果。 设计实践基于局部安全系数概念以及风险管理工程。 本文件适用于公称尺寸为DN？50至DN？4000的圆形管道、管件及其接头，用于在正常使用条件下输送水、污水和排水，无论有无压力。

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. NOTE？1？For the purpose of this document, the term polyester resin (UP) also includes vinyl-ester resins (VE). NOTE？2？Piping systems conforming to this document can also be used for non-buried applications, provided the influence of the environment and the supports are considered in the design of the pipes, fittings and joints. NOTE？3？This document can also apply for other installations, such as slip-lining rehabilitation of existing pipes. NOTE？4？ISO？10467 and ISO？10639, which are replaced by this document, are also referenced in ISO？25780, which specifies requirements for GRP-pipes used for jacking installation. The requirements for the hydrostatic pressure design of pipes referring to this document meet the requirements of ISO/TS？20656-1 and the general principle for the reliability of structures detailed in ISO？2394 and in EN？1990. These International Standards provide procedures for the harmonization of design practices and address the probability of failure, as well as possible consequences of failures. The design practices are based on a partial safety factor concept, as well as on risk management engineering. This document is applicable to circular pipes, fittings and their joints of nominal sizes from DN？50 to DN？4000, which are intended to be used for the conveyance of water, sewage and drainage at normal service conditions, with or without pressure.