7304.24.40

Analysis

HTS 7304.24.40 covers casing: other under heading 7304 (tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel). US Customs collects import statistics for it under 7 ten-digit suffixes, reported in kilograms.

This line's footnotes point to one additional provision in Chapter 99: 9903.90.09 (measures on products of Russia). Chapter 99 duties are added on top of the general rate for goods of the countries they name, and they change more often than the rest of the schedule, so check the current CBP guidance before you rely on a total.

Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 77% of the 250 tariff lines in chapter 73. Duty-free at the general rate does not rule out additional duties under Chapter 99, such as Section 301 or Section 232 measures, which depend on the country of origin.

The ten-digit suffixes separate having a wall thickness less than 12.7…, having a wall thickness of 12.7 mm or…, having a wall thickness less than 12.7…, having a wall thickness of 12.7 mm or…, having a wall thickness less than 12.7… and having a wall thickness of 12.7 mm or… and 1 more. The duty is the same across them; the suffix matters for statistics, licensing and some quotas, and an entry needs all ten digits.