This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of single screw pumps. This standard applies to single screw pumps that transport clean or watery, pasty, or highly viscous corrosive and non-corrosive media containing solid particles and fibers. The maximum working pressure of the pump is 3.6MPa, and the maximum flow rate is 265.2m^(2)/h.