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2部分：复合配件

[中文适用范围]： 本文件规定了工厂制造的无缝和焊接耐腐蚀合金（CRA）复合管件的设计、几何尺寸、材料、制造程序、检验方法、无损检测、标志、包装和储存的技术交货条件ISO 13623 中定义的石油和天然气行业管道运输系统中的 CRA 复合管件。 本文件适用于输送含有腐蚀性介质的单相或多相流体（例如石油、天然气）的运输或工艺管道中使用的 CRA 复合管件以及石油和天然气工业的水。 也可以作为其他领域的参考。 本文件规定的复合管件包括复合弯头、复合异径管、复合三通和复合盖。 指定了两种复合管件的技术交付条件等级。 B 级提供了复合管件的标准质量水平，S 级提供了酸性工作条件的技术要求。 预制支管、预制搭接短端和其他采用环焊缝或相交焊缝的配件均被视为管道预制件，不属于本文件的范围。 [外文原描述]： This document specifies the technical delivery conditions regarding design, geometric dimensions, materials, manufacturing procedures, inspection methods, non-destructive testing, marking, package and storage for factory-made, seamless and welded, corrosion resistant alloy (CRA) clad fittings for use in pipeline transportation systems for the petroleum and natural gas industries as defined in ISO 13623 . This document is applicable to CRA clad fittings 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. The clad fittings specified in this document include clad elbows, clad reducers, clad tees and clad caps. Two technical delivery conditions classes for clad fittings are designated. Class B provides a standard quality level for clad fittings and Class S provides technical requirements for sour-service conditions. Fabricated laterals, fabricated lap joint stub ends and other fittings employing circumferential or intersection welds are considered as pipe fabrication and are outside the scope of this document.