7214.91.00.20 - With a maximum cross section of 152 mm or more

This HTS category, 7214.91.00.20, specifically 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," that are of a rectangular (other than square) cross-section, contain less than 0.25 percent carbon by weight, and crucially, possess a maximum cross-sectional dimension of 152 millimeters or more. These are solid steel products characterized by their rectangular shape and substantial size, intended for further industrial use or fabrication.

The defining characteristic that separates this category from its sibling, 7214.91.00.16, is the measurement of the largest dimension of the cross-section. While both classifications refer to rectangular bars and rods of iron or nonalloy steel with less than 0.25 percent carbon, this particular entry applies only to those where the maximum dimension reaches or exceeds 152 mm. The sibling category encompasses those with a maximum cross-sectional dimension that is less than 152 mm.

As this is a leaf node in the HTS, there are no further subcategories to introduce. The classification is finalized at this level based on the combination of material composition (iron or nonalloy steel with < 0.25% carbon), processing (not further worked than forged, hot-rolled, etc.), cross-sectional shape (rectangular, not square), and the specific dimensional threshold of 152 mm or more for the maximum cross-section.