ISO 10439-2:2015规定了最低要求，并为石油，石油化工和天然气工业中处理天然气或加工空气的特殊用途应用的轴流压缩机，单轴和整体齿轮式离心压缩机和膨胀机 - 压缩机提出了建议。 ISO 10439-2:2015除了ISO 10439-1规定的一般要求外，还规定了非整体式齿轮离心和轴向压缩机的要求。这些机器没有与其外壳一体的齿轮，但可以具有外部齿轮

ISO 10439-2:2015 specifies minimum requirements and gives recommendations for axial compressors, single-shaft, and integrally geared process centrifugal compressors and expander-compressors for special purpose applications that handle gas or process air in the petroleum, petrochemical, and natural gas industries. ISO 10439-2:2015 specifies requirements for non-integrally geared centrifugal and axial compressors, in addition to the general requirements specified in ISO 10439-1. These machines do not have gears integral with their casing but can have external gears.