| 264 / | HD | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| 165 | DF | FORMING CONTINUOUS OR INDEFINITE LENGTH WORK {8} |
| 176.1 | DF | .~ Shaping by extrusion {11} |
| 209.1 | DF | .~.~ Hollow article {5} |
| 209.3 | DF | .~.~.~ Reshaping product (extrudate) subsequent to extrusion {1} |
| 209.4 | DF | .~.~.~.~ Sizing to desired dimension {1} |
| 209.5 | | .~.~.~.~.~ Stretching extruded material |