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SIC Description for 3398 Description for 3398: Metal Heat Treating

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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