How many screens are used to screen flour?

40 to 60 mesh. Household flour is very common, rough, sticky and not rigorous. You don't need to use a sieve with too high mesh, just choose 40 to 60 mesh. The number of sieves on the market ranges from 8 mesh to 500 mesh. The higher the number of grids, the tighter the grid and the smaller the grid. The lower the mesh number, the finer the mesh, and the easier it is for flour to pass through.