| 327120 | Aluminous refractory cement, manufacturing |
| Brick (i.e., common face, glazed, vitrified, hollow), clay, manufacturing | |
| Brick, clay refractory, manufacturing | |
| Brick, nonclay (e.g., chrome, magnesite, silica) refractory, manufacturing | |
| Cement, refractory, manufacturing | |
| Ceramic tile, floor and wall, manufacturing | |
| Clay brick, manufacturing | |
| Conduit, vitrified clay, manufacturing | |
| Coping, wall, clay, manufacturing | |
| Drain tile, clay, manufacturing | |
| Fire brick, clay refractories, manufacturing | |
| Floor tile, ceramic, manufacturing | |
| Flue lining, clay, manufacturing | |
| Kiln furniture, clay, manufacturing | |
| Liner brick and plates, vitrified clay, manufacturing | |
| Magnesia refractory cement, manufacturing | |
| Mortars, refractory, manufacturing | |
| Mosaic tile, ceramic, manufacturing | |
| Paving brick, clay, manufacturing | |
| Refractories (e.g., block, brick, mortar, tile), manufacturing | |
| Refractory cement and mortar, manufacturing | |
| Roofing tile, clay, manufacturing | |
| Sewer pipe and fittings, clay, manufacturing | |
| Structural clay tile, manufacturing | |
| Tile, ceramic wall and floor, manufacturing | |
| Tile, clay refractory, manufacturing | |
| Tile, clay, structural, manufacturing | |
| Tile, roofing and drain, clay, manufacturing | |
| Tile, sewer, clay, manufacturing | |
| Wall tile, ceramic, manufacturing |