ISO 20475:2018规定了对含有压缩、液化和溶解气体的气缸组进行定期检查和测试的要求。 注:附件A中提供了乙炔气瓶束的附加要求。 ISO 20475:2018还制定了气缸组维护的一般原则。 ISO 20475:2018不适用于带有无溶剂乙炔瓶的乙炔束。 ISO 20475:2018不包括作为蓄电池车辆一部分的气缸组要求。对于某些特定应用，例如海上，可适用其他要求。

ISO 20475:2018 specifies the requirements for the periodic inspection and testing of cylinder bundles containing compressed, liquefied and dissolved gas. NOTE Additional requirements for acetylene cylinder bundles are provided in Annex A. ISO 20475:2018 also establishes general principles for the maintenance of cylinder bundles. ISO 20475:2018 is not applicable to acetylene bundles with solvent-free acetylene cylinders. ISO 20475:2018 excludes the requirements for cylinder bundles when they are a part of a battery vehicle. For some specific applications, e.g. offshore, additional requirements can apply.