Surface International is one of the leading company in surface preparation technology, offering a complete range of air blast/peening, wheel blast/peening solutions. These applications of surface preparation (the bringing of an abrasive into contact with surface of the component) are offered by SI: 1. Centrifugal propulsion of the abrasive (wheel blast) 2. Pneumatic propulsion of the abrasive (air blast) 3. Guniting & ShotCrete machines, electric grout pumps & concrete placers