Plating, Electropolishing & Passivation ProjectsClick below to see a few examples of plating, electropolishing & passivation jobs that we have completed at the National Plating Company. Tin Plating of Babbitt-Lined Bearings More >>Zinc Plating of Small Gage SpringsMore >>Passivation of Mechanical ComponentsMore >> Electropolishing of Stainless Steel ComponentsMore >>