ABSTRACT
Commercial grades of sulfuric acid are stored and transported in steel vessels. For concentrated sulfuric acid at ambient temperatures, a protective layer of iron sulfate forms on the vessel walls which retards further corrosion. This protective layer can be removed by the high liquid velocities experienced in pipes, pumps, and valves. Steel pipes are satisfactory to transport sulfuric acid if the pipe diameter is large enough to yield a liquid linear velocity under 2.5 ft/s. Cast iron, alloy, and plastic-lined pipe are widely used to transport sulfuric acid. Pumps and valves are generally manufactured from a variety of acid-resistant alloys [ 1].
