The need to achieve best result as stressed during any cleaning thus can only lie upon effectiveness of method applied towards sand sweep blast on metal intended for cleaning. Thus, all practices are only but valuable to requirement of engineers and designers intension. The importance of removal of simple identifiable oil, grease, old coatings and surface contaminants (such as mill scale and rust on steel and zinc salts on galvanized surfaces) cannot be over emphasized to achieve best finish. An overview into this paper is to redefine surface preparation for a successful protective coating on metals and even in certain instance non-metals.
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