| Naics index | Naics index description |
|---|---|
| 332323 | Wrought iron fences manufacturing |
| 332410 | Aftercoolers (i.e., heat exchangers) manufacturing |
| 332410 | Barometric condensers manufacturing |
| 332410 | Boiler casings manufacturing |
| 332410 | Boilers, power, manufacturing |
| 332410 | Condenser boxes, metal, manufacturing |
| 332410 | Condensers, steam, manufacturing |
| 332410 | Economizers (i.e., power boiler accessory) manufacturing |
| 332410 | Exchangers, heat, manufacturing |
| 332410 | Heat exchangers manufacturing |