Tank Car, Single Dome, Acid

History: Tank cars are a railroad staple. They have been around since the first half of the 20th century. These railcars carry a wide array of commodities, including liquid fertilizers, chemicals, fuel oils and asphalt, and food-grade oils. Tank cars can be pressurized or non-pressurized, insulated or non-insulated. Single dome cars carry only a single commodity at once. Food-service tank cars may be lined with stainless steel, glass, or plastic. Tank cars carrying dangerous goods are generally made of different types of steel, depending on the intended cargo and operating pressure. They may also be lined with rubber or coated with specialized coatings for tank protection or product purity purpose. The tank heads are also stronger to prevent ruptures during accidents.