7306.30.50.20 - Other, cold-rolled (cold-reduced) with a wall thickness not exceeding 2.54 mm

This HTS category, 7306.30.50.20, encompasses welded tubes, pipes, and hollow profiles of iron or non-alloy steel with a circular cross-section. The defining characteristic of this classification is that the material has been cold-rolled (cold-reduced) and possesses a wall thickness not exceeding 2.54 mm. These are typically seamless or welded tubular products that undergo a cold working process to achieve precise dimensions, improved surface finish, and enhanced mechanical properties.

This category is distinguished from its siblings primarily by the manufacturing process and the specific wall thickness limitation. For instance, it differs from subcategory 7306.30.50.10, which is reserved for tubes suitable for specific heat exchange applications, regardless of whether they are cold-drawn. Furthermore, it is separate from 7306.30.50.15, which covers other cold-drawn tubes and pipes. The explicit mention of "cold-rolled (cold-reduced)" and the specific wall thickness cap of 2.54 mm are the key differentiators for this particular classification.

As this HTS code represents a leaf node in the tariff schedule, there are no further subcategories. Therefore, classification within 7306.30.50.20 relies on confirming that the goods are welded, circular, made of iron or non-alloy steel, have undergone cold-rolling, and have a wall thickness within the specified limit. Examples of goods that would fall here include certain types of precision tubes used in mechanical applications or general construction where these specific physical characteristics are met.