For the storage and mixing of bulk goods in the food industry, silos are usually designed with a conical outlet for an optimal handling of the goods. Cold-rolled steel is used for materials that come in contact with the media; if required corresponding material certificates are available. During fabrication, close attention must be paid to a gap-free welding and interior weld seams must be ground flush with the sheet metal (Ra<0,8 μm). The final surface is treated with ceramic or glass bead blasting.