7304.39.00.44 - Having a wall thickness of 19 mm or more

This HTS category, 7304.39.00.44, specifically classifies seamless tubes, pipes, and hollow profiles of iron or non-alloy steel that have a circular cross-section. The defining characteristic for inclusion within this subcategory is a wall thickness of 19 mm or more. These are generally heavy-duty steel pipes designed for applications requiring substantial structural integrity and resistance to pressure or wear.

This classification is distinct from its sibling categories based on precise wall thickness. Whereas 7304.39.00.36 covers pipes with a wall thickness under 12.7 mm, and 7304.39.00.40 addresses those with a wall thickness between 12.7 mm and less than 19 mm, this specific code applies only to those with a wall thickness equal to or exceeding 19 mm. All these sibling categories fall under the broader heading of "Other" seamless tubes and pipes of circular cross-section, of iron or non-alloy steel, with an outside diameter exceeding 114.3 mm but less than 190.5 mm.

As this is a leaf node within the HTS structure, there are no further subdivisions beneath it. Therefore, the classification hinges entirely on meeting the criteria of seamless construction, iron or non-alloy steel material, circular cross-section, the specified outside diameter range, and critically, the wall thickness of 19 mm or more. Examples of goods that would fall under this classification include thick-walled industrial piping for heavy machinery, oil and gas exploration, or structural applications where robust performance is paramount.