7214.99.00.40 - With a diameter exceeding 152 mm

This HTS classification, 7214.99.00.40, covers "other bars and rods of iron or nonalloy steel, not further worked than forged, hot-rolled, hot-drawn or hot-extruded, but including those twisted after rolling." Specifically, it applies to round bars and rods within this category that contain by weight 0.25 percent or more but less than 0.6 percent of carbon, and crucially, have a diameter exceeding 152 mm. These are typically used in construction, manufacturing, and various industrial applications where the specified carbon content and larger diameter are required for structural integrity and performance.

This particular subcategory is distinguished from its siblings by its precise dimensional requirement. While 7214.99.00.31 covers round bars with a diameter less than 76 mm, and 7214.99.00.36 includes those with a diameter of 76 mm or more but not exceeding 152 mm, this category is exclusively for round bars and rods with a diameter *greater than* 152 mm. This differentiation is based solely on the physical dimension of the cross-section, a critical factor for determining structural suitability and processing methods in subsequent manufacturing.

As this node is a leaf node, there are no further subcategories to explore. Classification within 7214.99.00.40 is therefore determined by the combination of the material composition (iron or nonalloy steel with 0.25% to <0.6% carbon), the form (round bars and rods not further worked than forging, hot-rolling, etc.), and the diameter exceeding 152 mm. Importers and exporters should verify these specific criteria to ensure accurate classification.