31-33 Manufacturing

332811 Metal Heat Treating

This industry comprises establishments primarily engaged in heat treating, such as annealing, tempering, and brazing, and cryogenically treating metals and metal products for the trade.

Establishments primarily engaged in both fabricating and heat treating metal products are classified in the Manufacturing sector according to the product made.

332812 Metal Coating, Engraving, and Allied Services to Manufacturers

This industry comprises establishments primarily engaged in one or more of the following: (1) enameling, lacquering, and varnishing metals and metal products; (2) hot dip galvanizing metals and metal products; (3) engraving, chasing, or etching metals and metal products (except jewelry; personal goods carried on or about the person, such as compacts and cigarette cases; precious metal products (except precious plated flatware and other plated ware); and printing plates); (4) powder coating metals and metal products; and (5) providing other metal surfacing services for the trade. Included in this industry are establishments that perform these processes on other materials, such as plastics, in addition to metals.

Both fabricating and coating and engraving products are classified in the Manufacturing sector according to the product made;

Engraving, chasing, or etching jewelry, metal personal goods, or precious metal products (except precious plated flatware and other plated ware) are classified in Industry 339910, Jewelry and Silverware Manufacturing.

Engraving, chasing, or etching printing plates are classified in Industry 323120, Support Activities for Printing.

332813 Electroplating, Plating, Polishing, Anodizing, and Coloring

This industry comprises establishments primarily engaged in electroplating, plating, anodizing, coloring, buffing, polishing, cleaning, and sandblasting metals and metal products for the trade. Included in this industry are establishments that perform these processes on other materials, such as plastics, in addition to metals.

Establishments primarily engaged in both fabricating and electroplating, plating, polishing, anodizing, and coloring products are classified in the Manufacturing sector according to the product made.