7304.59.80 - Other

This category encompasses tubes, pipes, and hollow profiles made from iron or steel, which are seamless and possess a circular cross-section. Crucially, these articles are not made from cast iron and are classified as "other" alloy steel. This designation signifies that they do not fall under specific alloy steel classifications or possess particular characteristics that would place them in a more specialized subcategory.

Distinguishing this classification from its sibling, 7304.59.60.00 (Of heat-resisting steel), is the absence of a heat-resisting property as the primary defining characteristic. While these articles may exhibit some degree of heat resistance, it is not the defining feature for their classification at this level.

The subcategories within 7304.59.80.xx are primarily differentiated by the outside diameter of the tubes, pipes, or hollow profiles. This granular distinction is critical for accurate customs declarations, as different diameter ranges may be subject to varying tariff rates or import regulations. The subdivisions range from those with an outside diameter less than 38.1 mm to those exceeding 406.4 mm, covering the entire spectrum of possible dimensions for these "other" alloy steel circular, seamless iron or steel hollow profiles.