The capacity of the flat bottom grain storage silos distributed by our company can be changed from 62 3to 22648 m3 and their diameter can be changed from 4,58m to 32m. The material of the silo is made of steel S350GD+Z therefore the maximum tensil stress is 350N/mm2. The thickness of the zinc is 600 g/mm2. This thickness of the zinc on the both sides of the plate provides unrivalled long life acceptancy.