7304.39.00.08 - Having an outside diameter exceeding 285.8 mm

This HTS category, 7304.39.00.08, classifies seamless tubes and pipes, and hollow profiles, made from iron or nonalloy steel, specifically those of a circular cross-section. The defining characteristic for this particular classification is their substantial size, requiring an outside diameter that exceeds 285.8 mm. These are not general-purpose pipes; rather, their significant dimensions are indicative of applications demanding robust fluid or gas transport under demanding conditions.

The distinction from its sibling categories is strictly based on the measurement of the outside diameter. While other categories within 7304.39.00 cover pipes with diameters less than 38.1 mm, between 38.1 mm and 190.5 mm, or between 190.5 mm and 285.8 mm, this classification is exclusively for those with an outside diameter exceeding the 285.8 mm threshold. This precise dimensional cutoff ensures that very large diameter seamless steel pipes, typically used in heavy industrial infrastructure projects, are correctly identified and managed for trade purposes.

As a leaf node in the HTS structure, this category does not have further subcategories. Therefore, classification is definitively determined by meeting the specified criteria of being a seamless iron or nonalloy steel tube/pipe of circular cross-section and possessing an outside diameter greater than 285.8 mm. Examples of such goods might include large-diameter steel pipes used in municipal water systems, large-scale oil and gas pipelines, or structural components in heavy industrial facilities where the volume and pressure requirements necessitate very large diameter conduits.