7306.40.50.05 - Of high-nickel alloy steel

This HTS category, 7306.40.50.05, specifically classifies welded tubes, pipes, and hollow profiles of iron or steel that are of circular cross-section, made from stainless steel, and have a wall thickness of 1.65 mm or more. The "of high-nickel alloy steel" descriptor further refines the material composition, indicating that the stainless steel used in these articles contains a significant proportion of nickel. These are generally finished products intended for various industrial applications where strength, corrosion resistance, and specific material properties are critical.

This classification is distinguished from its sibling categories by the precise combination of manufacturing method (welded), cross-sectional shape (circular), material type (stainless steel with high nickel content), and a minimum wall thickness. While other categories at this level might cover non-circular profiles, different manufacturing processes (e.g., seamless), or other types of steel, this node isolates a very specific subset of welded stainless steel pipes and tubes based on their robust construction and specialized alloy composition.

As this is a leaf node in the HTS, there are no further subdivisions. Therefore, the primary classification criteria to consider for this code are the welded construction, circular cross-section, the fact that it is made of stainless steel, and crucially, that its wall thickness measures 1.65 mm or greater, while also meeting the high-nickel alloy steel requirement. Careful verification of the material composition and dimensional specifications is essential for accurate classification under this code.