WebMetal Marking with a CO2 Laser. CO2 laser machines can directly mark a variety of coated metals such as anodized aluminum or powder coated stainless steel. However, bare metals reflect the wavelength of a CO2 … WebGalvanized (Zinc Coated) steel sheets are most often required for exterior applications of this decorative finish. Blackening agents will darken the zinc and not the steel. Blackened zinc has similar challenges to blackened steel, but it protects the steel from rust and is much more resistant to corrosion. Shown here is a grit blasted finish on ...
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