NAICS 332813: Electroplating, Plating, Polishing, Anodizing, and Coloring

Plating and anodizing shops apply zinc, nickel, chrome, tin and other metal finishes, anodize aluminum and polish or color parts for corrosion resistance, wear and appearance. Most work as job shops for machine shops, fabricators, stampers and OEMs, finishing parts made elsewhere, often on quick turnaround. They buy process chemicals, rectifiers, tanks, racks, wastewater treatment and test equipment, and they run under environmental permits. Their work comes from repeat relationships with nearby manufacturers, so they are sold to through the owner or plant manager.

NAICS 332813 is the North American Industry Classification System code for Electroplating, Plating, Polishing, Anodizing, and Coloring, a national industry in the Coating, Engraving, Heat Treating, and Allied Activities industry group (3328) of the Manufacturing sector (31-33).

Finishers sell to machine shops and fabricators: in Factur's 2026 prospecting data, 17% of CNC machining and tool/die quotes (71 of 421) and 17% of metal fabrication, sheet metal and stamping quotes (49 of 287) became purchase orders. Compare all five segments: Manufacturing sales by segment, 2026.