... .25mm,1.0-1.4mm,1.25-1.7mm,1.4-2.0mm,1.7-3.0mm. 3. Appearance: round , shining surface4 ... coating. Surface finishing and surface improvement of stainless steel and aluminium parts, producing a bright metallic finish on the surface. Deburring ... , cleaning and sand removal from stainless steel, aluminium and zinc die castings and sand castings. Concrete and natural ...