- Plastic refractories, clay (1)
- Glasshouse refractories (2)
- Brick, clay refractory (2)
- Fire clay blocks, bricks, tile, or special shapes (5)
- Ladle brick, clay (2)
- Kiln furniture, clay (1)
- Castable refractories: clay (2)
- Cement, clay refractory (6)
- Foundry refractories, clay (4)
- Heater radiants, clay (2)
- Hot top refractories, clay (1)
- Mortars, clay refractory (1)
