8462.51.00 - Numerically controlled

This HTS subcategory, 8462.51.00, specifically covers numerically controlled machines designed for working tube, pipe, hollow section, and bar. These machines utilize programmed numerical instructions to execute operations such as bending, folding, straightening, flattening, shearing, punching, notching, or nibbling. The key differentiator for this classification is the incorporation of numerical control systems that automate the precision and repetition of these metalworking processes, distinguishing them from manually operated or less sophisticated machinery.

Within the broader classification of machines for working tube, pipe, hollow section, and bar, 8462.51.00 is differentiated from its sibling category, 8462.59.00, which covers "Other" machines for these purposes that are not numerically controlled. Therefore, if a machine for working tube, pipe, hollow section, or bar lacks numerical control, it would be classified under 8462.59.00.

Further subdivisions exist within this numerically controlled category to distinguish between the condition of the machinery. The subcategory 8462.51.00.40 is designated for used or rebuilt machines, while 8462.51.00.80 encompasses all other numerically controlled machines within this scope, typically referring to new equipment. These distinctions are crucial for accurate tariff assessment and compliance purposes.