Industry: 3297—Nonclay Refractories
Establishments primarily engaged in manufacturing refractories and crucibles made of materials other than clay. This industry includes establishments primarily engaged in manufacturing all graphite refractories, whether of carbon bond or ceramic bond. Establishments primarily engaged in manufacturing clay refractories are classified in Industry 3255.
| Alumina fused refractories | High temperature mortar, nonclay |
| Brick, bauxite | Hot top refractories, nonclay |
| Brick, carbon | Nonclay refractories |
| Brick, refractory: chrome, magnesite, silica, and other nonclay | Plastics refractories, nonclay |
| Brick, silicon carbide | Pyrolytic graphite |
| Castable refractories, nonclay | Ramming mixes, nonclay |
| Cement, magnesia | Refractories, castable: nonclay |
| Cement: high temperature, refractory (nonclay) | Refractories, graphite: carbon bond or ceramic bond |
| Crucibles: graphite, magnesite, chrome, silica, or other non-clay | Refractory cement, nonclay |
| Cunning mixes, nonclay | Retorts, graphite |
| Dolomite and dolomite-magnesite brick | |
| Codes |
Titles | Total Marketable US Businesses |
| 32970000 | Nonclay refractories | 108 |
| 32970100 | Brick refractories | 10 |
| 32970101 | Brick, bauxite | 1 |
| 32970102 | Brick, carbon | 4 |
| 32970200 | Cement refractories | 6 |
| 32970201 | Cement refractories, nonclay | 4 |
| 32970202 | Cement, magnesia | 1 |
| 32970203 | Cement: high temperature, refractory (nonclay) | 15 |
| 32970300 | Heat resistant mixtures | 4 |
| 32970301 | Dolomite or dolomite-magnesite brick and shapes | 4 |
| 32970302 | Gunning mixes, nonclay | 0 |
| 32970303 | High temperature mortar, nonclay | 3 |
| 32970304 | Pyrolytic graphite | 0 |
| 32970305 | Ramming mixes, nonclay | 0 |
| 32979901 | Alumina fused refractories | 3 |
| 32979902 | Castable refractories, nonclay | 11 |
| 32979903 | Crucibles: graphite, magnesite, chrome, silica,other nonclay | 3 |
| 32979904 | Graphite refractories: carbon bond or ceramic bond | 21 |
| 32979905 | Hot top refractories, nonclay | 1 |
