Analysis
Subheading 7305.20 covers casing of a kind used in drilling for oil or gas, 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 4 US tariff lines below it are national.
Every one of its 4 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: 7305.20.20 for threaded or coupled (duty-free), 7305.20.40 for of iron or nonalloy steel: other (duty-free), 7305.20.60 for threaded or coupled (duty-free) and 7305.20.80 for of alloy steel: other (duty-free).
By Census's concordance, most of its statistical lines are made by Iron and Steel Mills and Ferroalloy Manufacturing (331110). Those are the NAICS industries a US producer of these goods would report under.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 7305.20.20 | Threaded or coupled | Free |
| 7305.20.40 | Of iron or nonalloy steel: other | Free |
| 7305.20.60 | Threaded or coupled | Free |
| 7305.20.80 | Of alloy steel: other | Free |