7305.11.10.60 - With an external diameter exceeding 609.6 mm

This HTS category, 7305.11.10.60, specifically classifies longitudinally submerged arc welded pipes and tubes made of iron or nonalloy steel, where the external diameter is greater than 609.6 mm. These are typically large-diameter pipes intended for specialized applications such as transporting oil and gas. The classification hinges on the combination of the welding method (longitudinally submerged arc welded), the material composition (iron or nonalloy steel), and the specific diameter range.

This category is distinguished from its sibling, 7305.11.10.30, solely by the external diameter. While both cover longitudinally submerged arc welded pipes of iron or nonalloy steel used for oil or gas pipelines, 7305.11.10.30 applies to those with an external diameter not exceeding 609.6 mm, whereas this category applies to those exceeding it. This precise diameter measurement is a critical factor in customs classification.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, the focus for classification under this code remains on confirming that the imported article meets all the preceding criteria: it is a tube or pipe of iron or steel, with a circular cross-section, intended for oil or gas pipelines, manufactured using the longitudinally submerged arc welded method, made of iron or nonalloy steel, and crucially, has an external diameter exceeding 609.6 mm.