7306.30.50.10 - Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn

This HTS category, 7306.30.50.10, specifically classifies other welded tubes, pipes, and hollow profiles of iron or non-alloy steel with a circular cross-section, when they have a wall thickness of 1.65 mm or more, and are *not* otherwise specifically defined by cold drawing or cold rolling processes. These are typically produced through welding and are intended for a variety of industrial applications, with a particular emphasis on those suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces, and feedwater heaters. The key differentiator is the absence of specific cold working methods when meeting the wall thickness and other criteria.

Distinguishing this category from its siblings is crucial for accurate classification. HTS code 7306.30.50.15 covers similar welded tubes but specifically those that have undergone a cold-drawing process. Similarly, 7306.30.50.20 addresses cold-rolled (cold-reduced) tubes with a wall thickness not exceeding 2.54 mm. Therefore, this node, 7306.30.50.10, represents the residual "other" category for welded, circular, iron or non-alloy steel tubes with a wall thickness of 1.65 mm or more, that do not fit the specific cold-drawn or cold-rolled criteria.

As a leaf node, there are no further subcategories under 7306.30.50.10. Classification at this level relies entirely on the combination of the article being a welded tube, pipe, or hollow profile of iron or steel, possessing a circular cross-section, a wall thickness of 1.65 mm or greater, and not being specifically described by cold drawing or cold rolling. The intended use in critical industrial heating and cooling equipment is a strong indicator for this classification.