塑料管道系统灌溉用聚乙烯（PE）管道规范

[中文适用范围]： 本文件规定了由聚乙烯 (PE) 制成的管道（主管、次主管和支管）的特性，用于在水温高达 45 °C 的情况下输送灌溉用水。 注1：水温对最大工作压力的影响见附录A。 本文件适用于长期不承受内压的管道，且每年不超过1500小时。 对于具有长期连续压力的管道应用，ISO 4427 系列适用。 注 2：本文件涵盖的管道的预期寿命为十年或更短。 本文件还规定了材料的特性及其所涉及的测试方法的参数。 [外文原描述]： This document specifies the characteristics of pipes (mains, sub-mains and laterals) made from polyethylene (PE), intended for the conveyance of water for irrigation, at a water temperature up to 45 °C. NOTE 1 For the effect of water temperature on the maximum operating pressure, see Annex A. This document applies to pipes that will not be subjected to internal pressure for long periods, and not more than 1 500 hours/year. For piping applications with long-term continuous pressure, the ISO 4427 series applies. NOTE 2 The expected lifetime of pipes covered by this document is ten years or less. This document also specifies the properties of the material and the parameters for the test methods to which it refers.