The classification of the Venturi tube 
 The structure is divided into Built Venturi tube and insert where Venturi tube Venturi tube. 
 The steel plant hot-blast stove combustion air, cold, gas metering (blast furnace gas, coke oven gas, converter gas) and thermal power plant boiler primary air, secondary air of large diameter, low flow pipe meter measurements received good results. 
 Solve the existing industrial enterprises of low pressure, large diameter, low flow rate of various types of gas flow, accurate measurement. Wide measuring range, and easy installation of the fluid measuring device. The unique structural design and data processing methods with rigorous fluid mechanics basis, and the country focus on wind tunnel laboratory practical flow calibration. 
 Feature 
 (1) the fluid resistance is small, about 150Pa low energy consumption. 
 (2) pressure, high accuracy, wide measuring range. 
 (3), good stability, a smooth differential pressure characteristics. 
 (4) Use a wide range of general gas, flue gas, blast furnace gas containing impurities and other long-term use to plug. 
 (5) easy to install, easy to maintain long-term. 
 (6) before and after the straight pipe is shorter than the standard throttling device, about the first 1.5D after 1D. 
 (7) with the line temperature, pressure correction integrated structure.