1范围 本国际标准规定了适用的要求、试验方法和安装技术 非开挖应用中使用的球墨铸铁管: -输送水或废水； -有压力或无压力操作。 注:在本国际标准中，所有压力均为以巴1）表示的相对压力。 本国际标准规定了材料、尺寸和公差、机械性能和 管道、配件和附件的标准涂层。它还给出了所有组件的性能要求 包括关节。 接头设计和垫片形状超出了本国际标准的范围。 本国际标准适用于通过任何类型的铸造工艺铸造的管道、配件和附件或 通过制造尺寸范围为DN80至DN80的铸造部件以及相应的接头而制造 含2 600。

1 Scope This International Standard specifies the requirements, test methods and installation technologies applicable to ductile iron pipes used in trenchless applications: — to convey water or wastewater; — operated with or without pressure. NOTE In this International Standard, all pressures are relative pressures expressed in bar(s)1). This International Standard 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 International Standard. This International Standard applies to pipes, fittings and accessories cast by any type of foundry process or manufactured by fabrication of cast components, as well as corresponding joints, of a size range DN 80 to DN 2 600 inclusive.