7306.30.50.56 - With an outside diameter not exceeding 50.8 mm

This HTS classification pertains to welded tubes, pipes, and hollow profiles of iron or non-alloy steel that have a circular cross-section. Specifically, these items fall under the broader category of "Other" welded, circular cross-section articles, and further within the "Other" subdivision for those with a wall thickness of 1.65 mm or more. The defining characteristic of this subcategory is that their outside diameter does not exceed 50.8 mm. This includes a wide range of pipes and tubes used in various industrial, mechanical, and construction applications where smaller diameter welded steel tubing is required.

The distinction between this category and its sibling, 7306.30.50.57, lies solely in the outside diameter measurement. While this category covers articles with an outside diameter of 50.8 mm or less, the sibling category encompasses those with an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm. Therefore, a precise measurement of the outside diameter is crucial for correct classification between these two nodes.

As this node is a leaf node, there are no further subcategories. Classification is determined by meeting all the preceding criteria: being an article of iron or steel, a welded tube, pipe, or hollow profile of circular cross-section, having a wall thickness of 1.65 mm or more, and an outside diameter not exceeding 50.8 mm. Examples within this classification could include small-diameter mechanical tubing, capillary tubes, or hollow rods made from welded iron or non-alloy steel.