7306.69.70.30 - Of stainless steel

This HTS category, 7306.69.70.30, specifically classifies tubes, pipes, and hollow profiles of iron or steel that are of an alloy steel composition and have a noncircular cross-section. These articles are welded and possess a wall thickness of less than 4 mm. The defining characteristic here is the material: alloy steel, which distinguishes these items from those made of ordinary carbon steel or stainless steel.

Within the broader group of "Other tubes, pipes and hollow profiles of iron or steel," this subcategory focuses on those with a noncircular cross-section that are welded and under 4 mm in wall thickness. The crucial differentiator from its sibling, 7306.69.70.60 (Other), is the material composition. While the sibling covers noncircular, welded profiles under 4mm wall thickness of other materials, this specific classification is reserved for those made of alloy steel.

As a leaf node, this category does not have further subdivisions. Therefore, classification at this level relies on accurately identifying the material as alloy steel, the welded construction, the noncircular cross-section, and the wall thickness being less than 4 mm. Examples could include specially shaped structural tubing used in construction or manufacturing where the properties of alloy steel are required, such as enhanced strength or corrosion resistance compared to carbon steel, and the specific noncircular geometry is functionally important.