Shot blasting
Shot blasting is quite similar to sandblasting. Both use kinda the same technique and machines.
Both shot lasting and sandblasting need specialized equipement for work. So for start you need shot blaster (shot blasting or sandblasting machine), nozzles, gun, hoes and abrasive. You link all together adn they start shot blasting.
Both process are being used fof cleaning surface and to remove debris or paint form surface.
But there is slight difference. Sandblasting uses fine silica sand and shots it towards the surface and therefore remove and partialy cleans the surface. Shotblasting on other hand uses shots or sand to then clean the surface. Basically for best effect you first need to sandblast media and then you shot blast it again with shot blaster to get perfect results.