本文件规定了ISO 13623中定义的石油和天然气行业管道运输系统中使用的半径为5xOD或更大的弯管的冷弯工艺弯管的交货技术条件。 本文件还规定了与ISO 3183中给出的管道产品规格等级相对应的冷弯弯管两个产品规格等级（PSL）的制造要求。本文件适用于由非合金钢或低合金钢制成的无缝管和焊接管制成的冷弯弯管。 注1:这些通常是C-Mn钢或低合金钢，适用于符合ISO 3183的相应等级和等级的管线管。 本文件不适用于冷弯产品规格等级的选择。买方有责任根据预期用途和设计要求指定PSL。 注2:另见ISO 3183:2012，简介。 本文件不适用于其他制造工艺制造的现场冷弯和管道弯头。

This document specifies the technical delivery conditions for bends made by the cold bending process for bend with radii 5xOD or higher for use in pipeline transportation systems for the petroleum and natural gas industries as defined in ISO 13623. This document also specifies the requirements for the manufacture of two product specification levels (PSLs) of cold bends corresponding to product specification levels given for pipe in ISO 3183. This document is applicable to cold bends made from seamless and welded pipe of unalloyed or low-alloy steels. NOTE 1 These are typically C-Mn steels or low-alloy steels that are appropriate for the corresponding level and grade of line pipe in accordance with ISO 3183. This document is not applicable to the selection of the cold bend product specification level. It is the responsibility of the purchaser to specify the PSL, based upon the intended use and design requirements. NOTE 2 See also ISO 3183:2012, Introduction. This document is not applicable to field cold bends and pipeline bends made by other manufacturing processes.