Analysis
Heading 7412 of the Harmonized Tariff Schedule covers copper tube or pipe fittings (for example couplings, elbows, sleeves). It divides into 2 six-digit subheadings and 2 eight-digit tariff lines, with 8 ten-digit statistical suffixes below them.
None of its 2 lines is duty-free at the general rate. Rates run from 3% to 3% with a median of 3%, so the line you choose sets the duty.
The largest subheadings are 7412.10 (unnamed, 1 line) and 7412.20 (unnamed, 1 line).
Its median rate of 3% sits at the 74th percentile of the headings in chapter 74.
By Census's concordance, most of its statistical lines are made by Other Metal Valve and Pipe Fitting Manufacturing (332919). Those are the NAICS industries a US producer of these goods would report under.
The heading text decides whether a product belongs here at all (General Rule of Interpretation 1); the subheadings and lines below it only apply once that is settled. Section and chapter notes can override the heading wording, so read them for borderline goods.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 7412.10.00 | Copper tube or pipe fittings (for example couplings, elbows, sleeves): of refined copper | 3% |
| 7412.20.00 | Copper tube or pipe fittings (for example couplings, elbows, sleeves): of copper alloys | 3% |