Steel grit is an abrasive made from processed scrap steel of high carbon steel or alloy steel. It is mainly used for cleaning, spraying, rust removal, and strengthening of metal surfaces. The raw material of steel grit is scrap steel of high carbon steel or alloy steel. After treatment, its surface roughness can reach 25-150um, which increases the contact surface of the metal surface, improves the surface adhesion of the coating, and has significant economic benefits for refining the metal surface and strengthening the metal structure.