This standard specifies the type, basic parameters and technical requirements of general fixed reciprocating piston air compressors, including test methods, inspection rules and marking, Encasement and storage requirements. It is suitable for air compressors with a motor Power range of 18.5 kW to 560 kW and a rated exhaust pressure of 0.7 MPa to 1.25 MPa. For air compressors with an exhaust pressure of less than 0.7 MPa, this standard can be implemented with reference. The purpose of this standard is to provide a unified technical basis to ensure the performance and safety of air compressors.