排水装置用球墨铸铁产品

[中文适用范围]： 本国际标准规定了用于建筑物外排水和下水道建设的球墨铸铁管、管件、附件及其接头的要求和试验方法，用于输送地表水（例如雨水）、生活污水和/或某些类型的工业废水，无论是单独系统还是合流系统；在无压（重力下水道）或正压/负压下运行；适用于地上或地下安装。本国际标准包含材料、尺寸和公差、机械性能以及管道、管件和附件的标准涂层的规范。它还给出了所有组件（包括接头）的性能要求。本国际标准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的管道、管件和附件，以及相应的接头，尺寸范围为DN 80至DN 2600（含）。适用于具有承口、法兰或插口端（接头设计和垫圈形状不在本国际标准范围内）的管道、管件和附件，通常内外均涂有涂层。 [外文原描述]： ISO 7186:2011 specifies the requirements and test methods applicable to ductile iron pipes, fittings, accessories and their joints for the construction of drains and sewers outside buildings: - to convey surface water (e.g. rainwater), domestic waste water and/or certain types of industrial effluents, either in separate systems or in combined systems; - operating without pressure (gravity sewers) or with positive or negative pressure; - for installation below or above ground. ISO 7186:2011 contains specifications for materials, dimensions and tolerances, mechanical properties and standard coatings of pipes, fittings and accessories. It also gives performance requirements for all components including joints. ISO 7186:2011 is applicable to pipes, fittings and accessories cast by any type of foundry process or manufactured by fabrication of cast components, as well as corresponding joints, in the size range DN 80 to DN 2600 inclusive. It is applicable to pipes, fittings and accessories which are manufactured with socketed, flanged or spigot ends (joint design and gasket shape are outside the scope of ISO 7186:2011) and normally delivered internally and externally coated.