7306.30.50.90 - Other

This HTS category, 7306.30.50.90, encompasses "Other" tubes, pipes, and hollow profiles of iron or steel that are welded, have a circular cross-section, are made of iron or non-alloy steel, possess a wall thickness of 1.65 mm or more, and have an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm. The "Other" designation here signifies items that do not fit into more specific, preceding subheadings within the broader category of welded, circular, iron or steel tubes and pipes of the specified wall thickness and diameter range.

This classification is distinguished from its sibling category, 7306.30.50.85, by the absence of galvanization. While both categories share the same structural and dimensional criteria (welded, circular cross-section, iron or non-alloy steel, wall thickness of 1.65 mm or more, and outside diameter between 114.3 mm and 406.4 mm), 7306.30.50.85 specifically covers galvanized products, indicating a protective zinc coating. Therefore, 7306.30.50.90 is for non-galvanized items meeting all other specifications.

As this is a leaf node within the HTS structure, there are no further subcategories for this specific classification. Classification into 7306.30.50.90 is final once all preceding criteria are met, and the product is determined not to be galvanized. This means that all welded, circular, non-alloy steel tubes or pipes within the specified diameter and wall thickness range, which are not explicitly covered by a more specific subheading (such as galvanized), will be classified under this "Other" designation.