Archived - Standard Industrial Classification - Establishments (SIC-E) 1980
425 - Mechanical Specialty Work
Establishments primarily engaged in process piping, automatic sprinkler systems, commercial refrigeration, environmental controls, millwright and rigging, thermal insulation and other mechanical specialty work.
| Code | Class |
|---|---|
| 4251Process Piping Work | Process Piping Work |
| 4252Automatic Sprinkler System Installation | Automatic Sprinkler System Installation |
| 4253Commercial Refrigeration Work | Commercial Refrigeration Work |
| 4254Environmental Control Work | Environmental Control Work |
| 4255Millwright and Rigging Work | Millwright and Rigging Work |
| 4256Thermal Insulation Work | Thermal Insulation Work |
| 4259Other Mechanical Specialty Work | Other Mechanical Specialty Work |
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