Division D: Manufacturing | Major Group 33: Primary Metal Industries | Industry Group 339: Miscellaneous Primary Metal Products

3398 Metal Heat Treating
Establishments primarily engaged in heat treating of metal for the trade.

• Annealing of metal for the trade
• Brazing (hardening) metal for the trade
• Burning metal for the trade
• Hardening of metal for the trade
• Heat treating of metal for the trade
• Shot peening-treating steel to reduce fatigue
• Stainless steel, brazing (hardening) for the trade
• Tempering of metal for the trade