HS 381600 Dolomite ramming mix
Quick Answer: Dolomite ramming mix imported under HS 381600 enters the UK duty-free, the EU at 0.00% or 2.70% ad valorem, and the US at Free or 30% ad valorem. This classification covers refractory materials, primarily composed of dolomite (a calcium magnesium carbonate mineral), prepared for use in lining furnaces and kilns. These mixes are essential for high-temperature industrial applications, particularly in the steel and cement industries. Importers and customs brokers should consult specific jurisdictional tariff schedules for precise duty rates, as preferential trade agreements can significantly alter applicable duties. CustomTariffs aggregates this data, highlighting the importance of accurate classification for compliance.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 3816009000 | 0.00 % | — | — |
| 3816001000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 3816001000 | 0.00 % | — | — |
| 3816009000 | 2.70 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 3816001000 | Free | — | ["t"] |
| 38160020 | 3% | Free (17 programs) | — |
| 3816002010 | — | — | ["kg"] |
| 3816002050 | — | — | ["kg"] |
Special rates available under trade agreements including USMCA, KORUS, GSP.
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
Which Trade Agreements Reduce Duties for HS 3816.00?
Imports of Dolomite ramming mix may qualify for reduced or zero duty rates under free trade agreements and preferential programs. The overview below shows available preferential arrangements by jurisdiction, compiled by HSRates from official tariff and trade agreement data.
United States (HTSUS)
Free for USMCA, KORUS, GSP, and 14 other programs
European Union (TARIC)
Preferential rate data not yet available.
United Kingdom
Preferential rate data not yet available.
Preferential rates require proof of origin and may be subject to quotas or conditions. Always verify eligibility with a licensed customs broker.
Data compiled by HSRates.
Which Preferential Rates Apply to Your Origin Country?
Select an origin country to see if preferential rates apply.
Preferential rates based on available trade agreements. Actual rates may vary.
How Has Trade Volume Developed?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 381600 cover?
This subheading covers dolomite ramming mix, a refractory material primarily composed of dolomite (a carbonate mineral comprising calcium magnesium carbonate, CaMg(CO₃)₂). According to the World Customs Organization's Harmonized System Explanatory Notes, this category includes mixtures used for lining furnaces, kilns, and other high-temperature industrial equipment, typically applied by ramming. The US International Trade Commission (USITC) Harmonized Tariff Schedule (HTS) and the EU's TARIC database confirm that these are prepared refractory materials, often containing binders and other additives to enhance performance at elevated temperatures.
What falls outside HS 381600?
The following products are excluded from HS 381600: raw dolomite not prepared as a ramming mix, which would typically fall under Chapter 25 as mineral products. Also excluded are finished refractory articles, such as bricks or shapes, which are classified under headings like 6806. Furthermore, refractory cements and concretes, even if containing dolomite, are generally classified under heading 3816 if they are not specifically prepared as ramming mixes, and their primary function is not ramming application.
What are common classification mistakes for HS 381600?
A common error is misclassifying raw dolomite or finished refractory products under this subheading. General Rule of Interpretation (GRI) 1, which states that classification shall be determined according to the terms of the headings and any relative section or chapter notes, is crucial. Importers may also incorrectly classify products that are merely dolomite-based but not specifically formulated or presented as "ramming mix" for refractory applications, potentially leading to misclassification under Chapter 25 or other headings in Chapter 38.
How should importers classify products under HS 381600?
The correct procedure for classifying products under HS 381600 involves a thorough review of the product's composition, intended use, and presentation. Importers and customs brokers must consult the official tariff schedule of the importing country (e.g., USITC HTS, EU TARIC, UK Trade Tariff) and the WCO HS Explanatory Notes. Verifying that the product is a prepared mixture of dolomite specifically designed for ramming into refractory linings is essential. Product literature and manufacturer declarations are vital supporting documents.
How is the duty calculated for products under HS 381600?
A shipment of 10 metric tons of "Dolomite Ramming Mix" declared at a customs value of $5,000 USD would attract a US duty of $175.00. This is calculated using the Most Favored Nation (MFN) duty rate of 3.5% ad valorem, applied to the declared customs value ($5,000 USD × 0.035 = $175.00). This calculation is based on the MFN rate published in the USITC Harmonized Tariff Schedule for subheading 3816.00.0000.
Which trade agreements reduce duties for HS 381600?
Several free trade agreements may reduce the applicable duty rate for HS 381600, including the United States-Mexico-Canada Agreement (USMCA). Under USMCA, originating dolomite ramming mix from Canada or Mexico can enter the United States duty-free. To claim this preference, a valid origin declaration or certificate of origin is required, depending on the specific requirements of US Customs and Border Protection. Other agreements may offer reduced rates for specific origin countries, but USMCA is a prominent example for North American trade.
```Which HS Codes Are Related?
Not the right code? Search all HS codes to find the correct tariff classification.
FAQ
What are the import duty rates for HS code 381600 (Dolomite ramming mix)?
The Most Favored Nation (MFN) duty rate for HS code 381600 is 0.00% ad valorem for imports into the United States. However, preferential rates may apply under various trade agreements. For example, imports from Australia (AU) and South Korea (KR) may have different rates, and some countries like Canada (CA) and Mexico (MX) under USMCA may also have specific provisions. It is crucial to consult the latest Harmonized Tariff Schedule of the United States (HTSUS) and relevant trade agreements for the most accurate and up-to-date duty information for your specific country of origin.
How is the import duty for HS code 381600 calculated, and can you provide an example?
The duty for HS code 381600 is typically calculated on an ad valorem basis, meaning it's a percentage of the declared value of the imported goods. For instance, if the MFN duty rate into the US is 0.00%, and you import 10 metric tons of dolomite ramming mix valued at $500 per metric ton, the total value is $5,000. The duty calculation would be: 0.00% of $5,000 = $0.00. Always verify the specific duty rate applicable to your shipment's country of origin and the current valuation rules.
What are the classification criteria for goods under HS code 381600, specifically for 'Dolomite ramming mix'?
HS code 381600 covers 'Refractory cements, mortars, concretes and similar refractory preparations, other than products of heading 3801.' Dolomite ramming mix falls under this category when it is a mixture primarily composed of refractory materials, such as dolomite (a calcium magnesium carbonate), intended for use in lining furnaces, kilns, or other high-temperature industrial equipment. The key is its composition and intended application as a refractory material that can be rammed into place.
What documentation is typically required for importing dolomite ramming mix (HS 381600)?
Standard import documentation for HS code 381600 generally includes a commercial invoice, packing list, and bill of lading or air waybill. Depending on the country of import and the specific product composition, additional documentation may be required. This could include a certificate of origin to claim preferential duty rates, safety data sheets (SDS) if classified as a hazardous material (though typically not for standard ramming mix), and potentially specific import permits or licenses if mandated by the importing country's regulations for industrial materials.
Which trade agreements commonly affect the import duties for HS code 381600?
The import duties for HS code 381600 can be significantly impacted by trade agreements. For imports into the United States, agreements like the United States-Mexico-Canada Agreement (USMCA) might offer preferential rates for goods originating from those countries. Similarly, other countries have their own trade pacts. For instance, the EU's TARIC system details preferential rates under agreements with countries like Switzerland, Norway, and various ACP nations. Importers should always check the specific trade agreements between their country of origin and the destination country to determine eligibility for reduced or eliminated duties.