球墨铸铁管道的灌溉应用.产品设计和安装

[中文适用范围]： 本标准规定了管道灌溉应用中使用的球墨铸铁管、配件和附件的设计系数、技术要求、试验方法、安装技术和操作建议。 注：在本文件中，所有压力均为相对压力，以巴表示1)。 该文件还规定了管道、管件和附件的材料、尺寸和公差、机械性能和标准涂层。 它还给出了包括接头在内的所有部件的性能要求。 接头设计和垫圈形状不属于本文件的范围。 本文件适用于通过任何类型的铸造工艺铸造或通过铸造部件制造制造的管道、配件和配件。 [外文原描述]： This document specifies the design factor, technical requirements, test methods, installation technologies and operation advices applicable to ductile iron pipes, fittings and accessories used in piped irrigation applications. NOTE In this document, all pressures are relative pressures expressed in bars. This document also specifies materials, dimensions and tolerances, mechanical properties and standard coatings of pipes, fittings and accessories. It also gives performance requirements for all components including joints. Joint design and gasket shapes are outside the scope of this document. This document applies to pipes, fittings and accessories cast by any type of foundry process or manufactured by fabrication of cast components.