3816

Analysis

Heading 3816 of the Harmonized Tariff Schedule covers refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801. It has 2 tariff lines.

1 of its 2 lines with a percentage rate are duty-free at the general rate (50%) and 1 are dutiable, from duty-free up to 3%. The median line pays 1.5%.

Its lines are 3816.00.10 for dolomite ramming mix (duty-free) and 3816.00.20 for refractory cements, mortars, concretes and similar… (3%).

Its median rate of 1.5% sits at the 25th percentile of the headings in chapter 38.

By Census's concordance, most of its statistical lines are made by Clay Building Material and Refractories Manufacturing (327120) and Ground or Treated Mineral and Earth Manufacturing (327992). 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.