57 / | HD | TEXTILES: SPINNING, TWISTING, AND TWINING |
200 | DF | STRAND STRUCTURE {11} |
210 | DF | .~ Covered or wrapped {10} |
212 | DF | .~.~ Wire wrapped {4} |
218 | .~.~.~ Stranded wire-wrapped layer {3} | |
219 | DF | .~.~.~.~> Including nonround cross section |
220 | DF | .~.~.~.~> With core other than wire |
221 | DF | .~.~.~.~> Coated or impregnated |