https://www.etsaindustry.com/products/crawler-shot-blasting-machine/
A crawler type shot blast cleaning machine, also known as a tumble belt shot blasting machine or crawler shot blasting machine, is designed for the efficient and uniform surface treatment of bulk quantities of small to medium-sized workpieces. This type of machine is particularly well-suited for removing rust, scale, sand, and burrs from various parts; preparing surfaces for painting, coating, or plating; and even shot peening to increase fatigue strength. It is commonly used in industries such as foundry, forging, automotive, and metal manufacturing.