A-Class Coating Bolts & Screws

The process of thermo-diffusion zinc coating is supplied an effective corrosion protection of different articles, including screwed, made from steel and cast iron and working on opened air, in industrial and marine atmosphere - in any place where the required thickness of coating is more than 20 microns. The coating is uniform and does not require additional mechanical treatment like a padding surface preparation to coloring, gumming and other coverings. The coating provides a full protection for iron-based sintered parts.