| 326121 |
Tube, nonrigid plastics, manufacturing |
| 326122 |
Fittings and unions, rigid plastics pipe, manufacturing |
| 326122 |
Fittings, rigid plastics pipe, manufacturing |
| 326122 |
Pipe fittings, rigid plastics, manufacturing |
| 326122 |
Pipe, rigid plastics, manufacturing |
| 326122 |
PVC pipe manufacturing |
| 326130 |
Laminated plastics plate, rod, and sheet, manufacturing |
| 326130 |
Plate, laminated plastics, manufacturing |
| 326130 |
Profile shapes (e.g., plate, rod, sheet), laminated plastics, manufacturing |
| 326130 |
Rod, laminated plastics, manufacturing |