| 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} |
| 210.1 |  | .~.~ And reshaping {6} |
| 210.2 | DF | .~.~.~> Including a step other than application or removal of tension |
| 210.3 | DF | .~.~.~> With application of agent other than water or air to workpiece {1} |
| 210.5 | DF | .~.~.~> With temperature gradient across cross-section of workplace or heat treatment after all shaping |
| 210.6 | DF | .~.~.~> With processing before extrusion or inclusion of additive |
| 210.7 | DF | .~.~.~> Plural stretching steps or stages |
| 210.8 | DF | .~.~.~> Of filament |