7304.41.30.15 - Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters

This HTS classification specifically covers seamless tubes and pipes of iron or steel that are of stainless steel. These articles must have undergone a cold-drawing or cold-rolling process, indicating a precise manufacturing method. The defining physical characteristic for inclusion in this category is an external diameter that is less than 19 millimeters. Furthermore, these tubes and pipes are suitable for use in specialized industrial applications, including boilers, superheaters, heat exchangers, condensers, refining furnaces, and feedwater heaters, highlighting their performance and material integrity requirements.

Distinguishing this category from its sibling, 7304.41.30.45, is the precise measurement of the external diameter. While the sibling category encompasses "Other" tubes and pipes of circular cross-section, of stainless steel, and cold-drawn or cold-rolled, it does not specify a diameter constraint. Therefore, this particular subcategory is reserved for those stainless steel tubes and pipes meeting the < 19 mm external diameter criterion, whereas the sibling would cover those exceeding this measurement or not fitting other specific diameter-based subcategories.

As this classification is a leaf node, there are no further subcategories. The classification is complete at this level, with the primary defining characteristics being the material (stainless steel), manufacturing process (cold-drawn or cold-rolled), seamless construction, specific external diameter (< 19 mm), and intended industrial applications. Importers and exporters should ensure all these criteria are met for accurate classification.