标准编号：ISO 15590-4:2019
中文名称：石油和天然气工业 管道运输系统的工厂弯头、配件和法兰 第4部分：工厂冷弯
英文名称：Petroleum and natural gas industries — Factory bends, fittings and flanges for pipeline transportation systems — Part 4: Factory cold bends
发布日期：2019-09
标准范围
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.
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