Analysis
HTS 3816.00.10 covers dolomite ramming mix under heading 3816 (refractory cements, mortars, concretes and similar compositions, including dolomite…).
Rates on the nearby lines range from 3% to 3%. The costliest confusion would be with 3816.00.20 (refractory cements, mortars, concretes and similar compositions…) at 3%, a difference of 3 points on the customs value.
There is no general-rate duty on this line, which puts it with roughly 25% of the 179 tariff lines in chapter 38 that are also free. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
Goods from countries without normal trade relations pay the column 2 rate of 30% instead of nothing, so origin decides between free entry and a 30% duty.
The other line in the same group is 3816.00.20 (refractory cements, mortars, concretes and similar…, 3%).
Census statistics map these goods to NAICS 327992 (Ground or Treated Mineral and Earth Manufacturing), an industry of 275 US establishments employing 10,279 people, the industry a domestic producer of these goods reports under.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 3816.00.20 | Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801: other | 3% |