7304.59.80.15 - Having a wall thickness less than 6.4 mm

This HTS classification, 7304.59.80.15, applies to seamless tubes and pipes of iron or steel, specifically those made from "other alloy steel" (not cast iron), having a circular cross-section. The defining characteristic of this subcategory is a wall thickness that is less than 6.4 mm. These seamless pipes and tubes are designed for a wide array of industrial applications where specific material properties and precise dimensions are critical.

This category is distinguished from its siblings by its precise wall thickness parameter. Unlike 7304.59.80.20, which covers tubes with a wall thickness of 6.4 mm or more up to 12.7 mm, or 7304.59.80.25, which applies to tubes exceeding 12.7 mm in wall thickness, this classification is exclusively for those with a wall thickness strictly below 6.4 mm. All three sibling categories share the common attributes of being seamless, circular, and made of other alloy steel, and having an outside diameter between 38.1 mm and 114.3 mm.

As a leaf node in the HTS structure, there are no further subcategories under 7304.59.80.15. Therefore, the classification is complete based on the product's material composition (other alloy steel), construction (seamless), cross-section (circular), outside diameter range (38.1 mm to 114.3 mm), and specific wall thickness (less than 6.4 mm). Importers and exporters should ensure all these criteria are met for accurate classification within this specific entry.