# United States tariff lines under HS 2518.10

> The United States tariff splits HS 2518.10 (dolomite, not calcined or sintered) into 1 national line: 2518.10.00.00 (dolomite, not calcined or sintered). Every United States line under 2518.10 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/251810
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 25](https://border.bot/countries/united-states/hs-codes/25) / [2518.10](https://border.bot/countries/united-states/hs-codes/251810)

## Key facts

- HS subheading: [2518.10](https://border.bot/hs-codes/251810)
- Duty (MFN): Free
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 25: Salt; sulphur; earths and stone; plastering materials, lime and cement

## United States lines under 2518.10

The United States tariff splits HS 2518.10 (dolomite, not calcined or sintered) into 1 national line: 2518.10.00.00 (dolomite, not calcined or sintered).

Every United States line under 2518.10 is free of general (MFN) duty.

- [2518.10.00.00](https://border.bot/countries/united-states/hs-codes/2518100000) Dolomite, not calcined or sintered. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2518.10 yet.

- [The Harmonized System text for 2518.10](https://border.bot/hs-codes/251810)

- Previous subheading: [2517.49](https://border.bot/countries/united-states/hs-codes/251749) Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling, or for railway or other ballast; shingle and flint, whether or not heat-treated; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated
- Next subheading: [2518.20](https://border.bot/countries/united-states/hs-codes/251820) Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2518.10?

The United States tariff splits HS 2518.10 (dolomite, not calcined or sintered) into 1 national line: 2518.10.00.00 (dolomite, not calcined or sintered).

### What is the duty on HS 2518.10 in the United States?

Every United States line under 2518.10 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/251810.json