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DOT 406 tank trailers are typically used for hauling and transporting gasoline and other highly flammable liquids. These tank trailers are usually composed of aluminium and have a heavily constructed top that is excavated to hold small spills. These tanks are generally separated into three to four compartments, with one hatch per compartment in the tank, and they feature one or more domes or hatches and dome coverings. DOT 406 tank trailers are elliptical when looking from the rear and have an oval shape with flat and nearly flat ends and have a maximum hauling capacity of 9000 gallons. Read more…..