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
Hot top refractories, nonclay
Brick, refractory: chrome, magnesite, silica, and other nonclay
Plastics refractories, nonclay
Brick, silicon carbide
Castable refractories, nonclay
Ramming mixes, nonclay
Refractories, castable: nonclay
Cement: high temperature, refractory (nonclay)
Refractories, graphite: carbon bond or ceramic bond
Crucibles: graphite, magnesite, chrome, silica, or other non-clay
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