Analysis
Subheading 7305.31 covers longitudinally welded, within heading 7305. The first six digits are shared by every country that uses the Harmonized System, so this part of the code is the same in the US, UK and EU schedules; the 3 US tariff lines below it are national.
Every one of its 3 tariff lines is duty-free at the general rate, so classification within the subheading affects statistics and Chapter 99 measures rather than the base duty.
The US splits it as follows: 7305.31.20 for tapered pipes and tubes of steel principally used as parts of… (duty-free), 7305.31.40 for of iron or nonalloy steel (duty-free) and 7305.31.60 for other: of alloy steel (duty-free).
By Census's concordance, most of its statistical lines are made by Iron and Steel Mills and Ferroalloy Manufacturing (331110) and Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (331210). Those are the NAICS industries a US producer of these goods would report under.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 7305.31.20 | Tapered pipes and tubes of steel principally used as parts of illuminating articles | Free |
| 7305.31.40 | Of iron or nonalloy steel | Free |
| 7305.31.60 | Other: of alloy steel | Free |