7304.59.20

Analysis

HTS 7304.59.20 covers suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters 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.

Goods from countries without normal trade relations pay the column 2 rate of 35% instead of nothing, so origin decides between free entry and a 35% duty.

There is no general-rate duty on this line, which puts it with roughly 77% of the 250 tariff lines in chapter 73 that are also free. 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 of heat-resisting steel, having an outside diameter less than…, having an outside diameter of 38.1 mm…, having an outside diameter exceeding…, having an outside diameter of 190.5 mm… and having an outside diameter exceeding… 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.