This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules and marking, Encasement and storage requirements for air-cooled, single-acting, oil-lubricated miniature reciprocating piston air compressors. Applicable to air compressors driven by electric motors or equivalent internal combustion engines with a rated exhaust pressure not exceeding 1.4 MPa from Rated power 0.18 kW to 15 kW. In addition, the standard also applies to equipment with a Rated power of 18.5 kW and an exhaust pressure of 0.5 MPa.