This standard specifies the terms and definitions, classification and composition, requirements and test methods of mobile C-arm X-ray equipments. This standard applies to mobile X-ray equipments with C-arm mechanical support devices, which are mainly used for positioning and inspection, in surgical operations in medical and health institutions. This standard does not apply to C-arm X-ray equipment, which has a maximum focus-image-receiver distance (SID) of less than 60 cm.