7304.39.00.28 - Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm

This HTS classification, 7304.39.00.28, specifically covers seamless tubes and pipes, and hollow profiles, made of iron or nonalloy steel, that have a circular cross-section. The defining characteristic of this category is its wall thickness, which must be greater than or equal to 6.4 mm and not exceed 12.7 mm. These dimensions, when combined with the specified outside diameter range established by its parent category (38.1 mm or more but not exceeding 114.3 mm), narrow down the scope to a particular subset of steel tubular products.

This particular sub-classification is distinguished from its siblings based on precise wall thickness parameters. Category 7304.39.00.24 encompasses tubes with a wall thickness *less than* 6.4 mm, while category 7304.39.00.32 covers those with a wall thickness *exceeding* 12.7 mm. Therefore, this node serves as a distinct grouping for seamless steel tubes and pipes falling precisely within the middle range of wall thicknesses described.

As this classification represents a leaf node within the HTS database, there are no further subcategories. Classification at this level is determined solely by the material (iron or nonalloy steel), construction (seamless), cross-sectional shape (circular), outside diameter range (as dictated by parent categories), and critically, the wall thickness falling between 6.4 mm and 12.7 mm, inclusive. This precise combination of physical attributes ensures accurate customs declaration for these specific steel tubular products.