The Abrasiive Blast Cleaning is the cleaning of the surface by the action of granular abrasives propelled either by compressed air through a nozzle or by using a vaned hardened steel blast wheel.Abrasive Blast Cleaning provides a method of surface preparation that is rapid and well established. Blast cleaning in its purest sense,relies primarily on mechanical forces(rather then chemical) to achieve cleaning performance.To blast clean,some form of media needs to be directed and ?blasted? via some method of delivery,towards a surface.The mechanisms of delivery and types of medis are wide and diverse and the possible combinations are many.With this versatility,blast cleaning,if specified properly,can be used to clean in many applications. There are several methods and equipment options available for delivering blast medis -- again,these depends on the application.Different applications require different media - and there are many media choices from which to select.Blast Cleaning is line-of-sight in nature.As such,only those surface that can be impacted by the blast spray may be effectively cleaned. In this seminars,we discuss the physical properties of metallic and non-metaalic blasr-cleaning abrasives and describes their versatility in producing various degrees of finish and cleanliness on metal surface.Also reviewed are types of metallic abrasives and an analysis of blast-cleaning with these abrasives.