| 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} |
| 211.12 | DF | .~.~ Processing or treatment after extrusion {1} |
| 211.13 | DF | .~.~.~ Contact of extrudate with fluid other than ambient air {4} |
| 211.14 | DF | .~.~.~.~ Filament (e.g., fiber, etc.) {3} |
| 211.17 | | .~.~.~.~.~ Heating |