... to ensure the tightness and using period.(2) ColumnThe column, made by the Z-bar, is used to reinforce the silo ... convenient and accessible for any maintenance work. 2. RoofRoof is made up of radiated beam, roof cover board, tension ring, ventilator scoop ... of any quantity of silos with handling capacity from 100 up to 100,000 tons and more.Silos of galvanized steel ...