This standard specifies the basic requirements for product classification, technical requirements, factory inspection, performance testing, inspection rules, signs and identifications, factory documents, packaging, transportation and storage of small air separation equipment. Those not specified in this standard should comply with the relevant industry and national current standards and regulations. This standard applies to air separation equipment (hereinafter referred to as air separation equipment) that uses low-temperature methods to separate air to produce oxygen, nitrogen gas or argon gas and a small amount of liquid products, with an oxygen output of less than 1 000 m/h. This standard does not apply to air separation equipment that only produces liquid oxygen, liquid nitrogen and pure nitrogen products.