This standard specifies the type, basic parameters, main dimensions and technical requirements of glass-lined impeller stirrers for glass-lined mixing vessels. This standard is applicable to glass-lined open mixing vessels with a nominal volume of 50L to 5000L and a nominal volume of 2500L, with a nominal pressure less than or equal to 1.0 MPa, a medium temperature higher than -20°C and lower than or equal to 200°C, and a nominal stirrer speed of 125r/min. to 20000L glass-lined closed mixing vessel.