The most common failures in a rod pumping application often occur in either the Rod String, Production Tubing, or the Rod Pump. Most frequently seems to be the Rod Pump and the many components that make up a complete pump. Heavy solids from formation wreak havoc on the pump internals, but most commonly the Barrel. Current options on the market include a combination of Steel, Stainless Steel, and Brass barrels treated with a Chrome Plating or Nickel Carbide. Each of these surface coatings offer limitations, leaving operators to weigh the risks of each.