Establishments primarily engaged in manufacturing clay firebrick and other heat resisting clay products. Establishments primarily engaged in manufacturing nonclay refractories and all graphite refractories, whether of carbon bond or ceramic bond, are classified in Industry 3297.

  • Brick, clay refractory: fire clay and high alumina
  • Castable refractories, clay
  • Cement, clay refractory
  • Clay refractories
  • Crucibles, fire clay
  • Fire clay blocks, bricks, tile, and special shapes
  • Firebrick, clay
  • Floaters, glasshouse: clay
  • Foundry refractories, clay
  • Glasshouse refractories
  • Heater radiants, clay
  • Hot top refractories, clay
  • Insulating firebrick and shapes, clay
  • Kiln furniture, clay
  • Ladle brick, clay
  • Melting pots, glasshouse: clay
  • Mortars, clay refractory
  • Plastics fire clay bricks
  • Plastics refractories, clay
  • Rings, glasshouse: clay
  • Saggers
  • Stoppers, glasshouse: clay
  • Tank blocks, glasshouse: clay
  • Tile, clay refractory