Stainless steel ultrasonic flow meter

The utility model relates to the technical field of measurement of flow, in particular to a stainless steel ultrasonic flow meter which comprises a meter body, an ultrasonic transducer and an installing part thereof, and a calculator, wherein the meter body comprises a metal body tube, a meter body flange, a meter body installing base and a rectifier plate. The stainless steel ultrasonic flow meter is characterized in that the meter body tube is made of a stainless steel material, flat cavity plates are symmetrically arranged in the meter body tube along axial directions of two sides of the center and are made of stainless steel, a square panel is arranged in the middles of the flat cavity plates, two ends of the square panel respectively extend outwards along the radial direction of an axial line to form an extending surface, the peripheries of the flat cavity plates are fixedly connected with the meter body tube, a section of an inner cavity formed between the meter body tube and the flat cavity plates and