Hard inside and out. These are our stainless steel silos. This may sound logical, but it is not self-evident. With the right equipment, high-end silos are provided that are worth the investment. They have a finish layer (2B) that makes our outdoor storage silos scratch-resistant, very strong, hygienic and highly resistant to corrosion and oxidation. This ensures a long lifespan. The silo is welded inside and out to ensure this quality. The quality offered for outdoor storage silos is very high as they are used in the bakery industry.