428 / | HD | STOCK MATERIAL OR MISCELLANEOUS ARTICLES |
544 | DF | ALL METAL OR WITH ADJACENT METALS {31} |
573 | ![]() | .~ Width or thickness variation or marginal cuts repeating longitudinally {2} |
574 | DF | .~.~> Variation in both width and thickness |
575 | DF | .~.~> Marginal slots (i.e., deeper than wide) |