Garnet 20-40 or Garnet 20/40 is a coarse-grade abrasive that cuts through heavy rust, thick coatings, and tough mill scale on steel surfaces fast. The particle size sits between 0.42 mm and 0.84 mm. It produces a surface profile between 85 and 105 microns. Paint and coatings stay in place for a long time when the surface has that level of texture. Site managers on marine, oil and gas, and construction projects pick Garnet 20 40 Mesh Dubai because it gives the surface exactly what it ne ...