7304.19.10.60 - Having a wall thickness of 12.7 mm or more

This HTS category, 7304.19.10.60, specifically classifies seamless line pipe of iron or nonalloy steel that is designed for use in oil or gas pipelines. The key defining characteristic for this subcategory is its substantial wall thickness, which must be 12.7 mm or greater. This physical attribute is crucial for ensuring the structural integrity and safety required for transporting hydrocarbons under significant pressure.

This classification is distinguished from its sibling category, 7304.19.10.45, by the precise wall thickness. While both are seamless line pipes of iron or nonalloy steel with an outside diameter between 215.9 mm and 406.4 mm, this particular subcategory *requires* a wall thickness of 12.7 mm or more, whereas the sibling covers pipes with a wall thickness *less than* 12.7 mm. This distinction is vital for selecting the appropriate duty rate and import regulations based on the pipe's engineering specifications.

As this is a leaf node within the HTS, there are no further subcategories. The classification ends with the specified physical parameters: seamless line pipe for oil or gas pipelines, made of iron or nonalloy steel, with an outside diameter between 215.9 mm and 406.4 mm, and a wall thickness of 12.7 mm or more. This level of specificity ensures that only pipes meeting all these exact criteria are classified under this code.