Both lines cover new numerically controlled profile forming machines not captured by the used/rebuilt or under-$3,025 lines, and importers should consult the current US HTS schedule notes and any applicable CBP rulings to determine which NESOI line applies to a specific machine configuration. When two NESOI lines exist at the same level, classification often turns on a technical specification or end-use distinction detailed in the schedule's chapter notes or CBP binding rulings.

Roll forming passes flat strip through a series of contoured rolls to progressively shape a continuous profile, while press-brake bending makes discrete bends in individual sheet blanks. This distinction matters for classification: roll-forming and profile-forming machines fall under 846222, while numerically controlled press brakes are classified under the separate heading 846223. Misidentifying the forming method can result in the wrong tariff line.