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

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