Shot Blasting is the Cheapest and most effective method for Surface Preparation Shot Blasting provides a uniform and consistent fine matt or rough surface. The surface becomes perfectly suitable for painting, galvanizing and metal spraying Shot blasting can form permanent bond between shot blasted surface and protective coating like paint, zinc and epoxy powder coating etc. It also reveals surface defects in the metal. It increases the life of protective coating adheres tenaciously to the scale-free, blast cleaned surface. Thus maintenance cost for repainting can be considerably reduced .