7306.61.70 - Of alloy steel

This HTS category, 7306.61.70, specifically covers welded tubes, pipes, and hollow profiles of iron or steel that have a square or rectangular cross-section, a wall thickness of less than 4 mm, and are made of alloy steel. The "alloy steel" designation is critical, differentiating these goods from those composed of non-alloy steel.

Unlike its sibling category 7306.61.50, which encompasses similar shapes and dimensions but is made of iron or non-alloy steel, this classification applies only to articles where specific alloying elements have been intentionally added to the iron to enhance its properties. This distinction is fundamental for determining applicable duties and trade regulations.

Within this category, further subdivisions exist to refine the classification based on the specific type of alloy steel. The subcategories, 7306.61.70.30 (Of stainless steel) and 7306.61.70.60 (Other), allow for precise identification of whether the alloy steel in question is stainless steel or another form of alloy steel, facilitating more granular trade data collection and specific policy application.