HTS heading · chapter 69
6903
Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths
Analysis
Heading 6903 of the Harmonized Tariff Schedule covers other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar…. It divides into 3 six-digit subheadings and 3 eight-digit tariff lines, with 4 ten-digit statistical suffixes below them.
Every one of its 3 tariff lines is duty-free at the general rate, so classification within the heading affects statistics and Chapter 99 measures rather than the base duty.
Its median rate of duty-free sits at the 13th percentile of the headings in chapter 69.
The largest subheadings are 6903.10 (unnamed, 1 line), 6903.20 (unnamed, 1 line) and 6903.90 (unnamed, 1 line).
By Census's concordance, most of its statistical lines are made by Clay Building Material and Refractories Manufacturing (327120). Those are the NAICS industries a US producer of these goods would report under.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 6903.10.00 | Containing by weight more than 50 percent of free carbon | Free |
| 6903.20.00 | Containing by weight more than 50 percent of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2) | Free |
| 6903.90.00 | Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths: other | Free |