HS Code 251820
6-digit classification for Calcined or Sintered Dolomite, with duty lookup and 1688 checks before payment
Official description: 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; dolomite ramming mix : Calcined or sintered dolomite
Also searched as: calcined dolomite, sintered dolomite, dead-burned dolomite, dolomite clinker, dolomite refractory
Classification
How 251820 breaks down
Salt; sulphur; earths and stone; plastering materials, lime and cement
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; dolomite ramming mix
Calcined or sintered dolomite
Short answer
What HS code 251820 means before paying a 1688 supplier
HS code 251820 is the 6-digit HS 2022 starting point for calcined or sintered dolomite; often searched as calcined dolomite, sintered dolomite, dead-burned dolomite. Before using it in a landed-cost estimate, confirm the product material, function, destination market, and the official tariff source. Treat any 1688 supplier code as a clue, not the final import classification.
Use
Start with this 6-digit HS code and compare the product's material, function, and use.
Verify
Check the destination market's official HTS, TARIC, commodity-code, duty, VAT, or GST source.
Decide
If classification, documents, or restricted-product risk is unclear, submit the product for a written check.
Covered products
What products fall under HS code 251820?
Buyers sourcing calcined or sintered dolomite from 1688 commonly describe it in these ways. If your product matches, 251820 is likely the right 6-digit starting point — confirm material and intended use against the official tariff.
Import duty by market
Where to check the import duty for HS 251820
The 6-digit code is universal, but duty, VAT and GST are set by the destination country and depend on the full national tariff line with China as the country of origin. Start from the official source for your market.
United States
USITC / CBP · Harmonized Tariff Schedule (HTS)
European Union
TARIC · Access2Markets
United Kingdom
HMRC · UK Integrated Online Tariff
Canada
CBSA · Canadian Customs Tariff
Australia
ABF · Australian customs tariff
Singapore
Singapore Customs · Singapore Trade Classification (HS)
Compare the real China-origin import tax across markets
Use the HS & import duty checker to estimate duty + VAT/GST for 251820 by destination before you pay a 1688 supplier.
Heading 2518
Other HS codes under 2518
Subheadings in the same 4-digit heading — "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; dolomite ramming mix". If 251820 is not an exact match, one of these may classify your product more precisely.
Questions
HS code 251820: common questions
What is HS code 251820?
HS code 251820 is the World Customs Organization 6-digit HS 2022 subheading for "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; dolomite ramming mix : Calcined or sintered dolomite". The first two digits (25) are the chapter — Salt; sulphur; earths and stone; plastering materials, lime and cement — and digits 3-4 (2518) are the heading. Countries add further digits (8-10) for their national tariff line.
What products fall under HS 251820?
Common products classified under 251820 include calcined dolomite, sintered dolomite, dead-burned dolomite, dolomite clinker, dolomite refractory and similar items matching calcined or sintered dolomite. The correct code still depends on the product's material, function and intended use.
How do I find the import duty for HS code 251820?
Duty is set by the destination country, not by the 6-digit HS code alone. Start from the official tariff of your market — USITC HTS (US), TARIC / Access2Markets (EU), GOV.UK Trade Tariff (UK), CBSA (Canada), ABF (Australia) or Singapore Customs — and look up the full national code with China as the country of origin.
Is HS code 251820 the same in every country?
The first 6 digits (251820) are the same worldwide under the WCO Harmonized System. Beyond that, each country extends the code (HTS in the US, TARIC in the EU, etc.) and sets its own duty and tax rates.
Can I trust the HS code a 1688 supplier gives me?
Treat a supplier-provided code as a clue, not a final classification. It can be incomplete, China-export-specific, or mismatched to your destination's rules. Verify against the official tariff and your product's actual material and use.
Chapter 25
Explore Salt; sulphur; earths and stone; plastering materials, lime and cement
Sourcing calcined or sintered dolomite from 1688?
Get a written pre-payment check — classification clues, China-origin landed cost, and supplier risk — before you commit. 5,754 HS codes covered.