7306.40.50.85 - Containing more than 0.5 percent but less than 24 percent by weight of nickel

This HTS category, 7306.40.50.85, specifically classifies welded tubes, pipes, and hollow profiles of iron or steel that are of stainless steel, have a circular cross-section, and possess a wall thickness of 1.65 mm or more. These items are further characterized by having an outside diameter that exceeds 114.3 mm but does not exceed 406.4 mm. The key defining attribute for this particular subcategory is the chemical composition of the stainless steel, requiring it to contain more than 0.5 percent but less than 24 percent by weight of nickel.

Distinguishing this category from its sibling, 7306.40.50.90 "Other," is crucial. While both fall under the broader "Other" classification for stainless steel tubes with a wall thickness of 1.65 mm or more and an outside diameter within the specified range, this node is specifically for those where the nickel content is meticulously defined between 0.5% and 24%. The "Other" sibling would encompass stainless steel tubes meeting the dimensional and welding criteria but falling outside this specific nickel percentage range, or those with other defining characteristics not captured by this nickel-specific node.

As this is a leaf node within the HTS, there are no further subcategories to introduce. Therefore, classification under 7306.40.50.85 hinges entirely on meeting all the preceding criteria: being a welded tube/pipe/hollow profile of iron or steel, of stainless steel, of circular cross-section, with a wall thickness of at least 1.65 mm, an outside diameter between 114.3 mm and 406.4 mm, and the specified nickel content range. This level of detail ensures precise identification for customs purposes.