Shot blasting Plants also known as Abrasive or Grit or Sand blasting is a surface preparation method that involves propelling abrasive materials at high velocities onto the surface of a workpiece. This process can also be called sand blasting and is used for cleaning, preparing, and finishing various materials, such as metal, concrete, and stone. The primary goal of shot blasting is to remove contaminants, scale, rust, or old coatings from the surface, creating a clean and roughened profile for further treatment, such as painting, coating, or bonding.