石油和天然气工业.管道运输系统用耐腐蚀合金复合弯管和配件.第1部分:复合弯管

[中文适用范围]： 本文件规定了用于管道运输系统的耐腐蚀合金（CRA）复合弯管的设计、几何尺寸、材料、制造程序、检验方法、无损检测（NDT）、标志、包装和储存的技术交货条件。 石油和天然气工业。 本文件适用于石油和天然气工业中输送含有腐蚀性介质的单相或多相流体（例如石油、天然气和水）的运输或工艺管道中使用的CRA复合弯头。 也可以作为其他领域的参考。 指定了两种堆焊弯管的技术交货条件等级。 B 级提供了复合弯管的标准质量水平，S 级提供了酸性使用条件的技术要求。 买方有责任根据预期用途和设计要求指定适当的类别。 [外文原描述]： This document specifies the technical delivery conditions regarding design, geometric dimensions, materials, manufacturing procedures, inspection methods, non-destructive testing (NDT), marking, package and storage for corrosion resistant alloy (CRA) clad bends for use in pipeline transportation systems for the petroleum and natural gas industries. This document is applicable to CRA clad bends for use in transportation or process pipelines transporting corrosive media-containing single-phase or multi-phase fluid such as oil, gas and water for the petroleum and natural gas industries. It can also be used as reference in other fields. Two technical delivery conditions classes for clad bends are designated. Class B provides a standard quality level for clad bends and Class S provides technical requirements for sour-service conditions. It is the responsibility of the purchaser to specify the appropriated class, based upon the intended use and design requirements.