Tanks are everywhere. In their infinite variety of shapes, sizes and uses, they are vital to a functioning society. When it comes to food, however, and chances of contamination or colonization by bacteria, there is only one reliable candidate. That is why trucks with stainless steel tanks carrying edible oils, sugar, milk and all the other raw materials that go into the manufacture of foodstuffs are common sights on highways and, on occasion, railways. Less commonly, they are used to transport potable water. The reasons, however, remain the same: longevity, strength, corrosion resistance, and ease of cleaning and sanitation.