This standard specifies the terms and definitions, information confirmation, type and basic parameters, basic requirements, technical requirements, testing and inspection, inspection rules, delivery, marking, packaging, storage and quality commitment of plunger metering pumps. This standard applies to plunger metering pumps (hereinafter referred to as "pumps") that transport liquids that do not contain solid particles and have a temperature of -30 ℃ ~ 200 ℃ and a viscosity of 0.3 mm2/s ~ 2000 mm2/s.