Portland Cement Clinker
Portland cement clinker is the intermediate product formed by sintering limestone and clay at high temperatures, primarily composed of calcium silicates. As the unground form of hydraulic cement, it falls directly under this tariff item for cement clinkers.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the clinker is ground into white Portland cement
Ground cement is classified under cement headings.
If the clinker is ground into other Portland cement
Ground cement falls under cement headings, not clinker.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the clinker is in its crude, unground state without added colorants or other processing
• Declare the weight accurately, as the statistical unit is based on dry weight
• Be prepared to provide a certificate of origin if claiming preferential tariff treatment
Related Products under Tariff item 2523.10.00
Aluminous Cement Clinker
Aluminous cement clinker, also known as high-alumina clinker, is produced by sintering bauxite and limestone at high temperatures. It is a hydraulic cement clinker in its unground state, falling under this tariff item as the primary product before further processing into cement.
Low-Alkali Cement Clinker
Low-alkali cement clinker is a type of Portland cement clinker with reduced alkali content, specifically designed to prevent alkali-silica reactions in concrete. As an unground clinker, it falls under this tariff item for hydraulic cement clinkers.
Oil Well Cement Clinker
Oil well cement clinker is a hydraulic cement clinker engineered for high-pressure and high-temperature oilfield applications, conforming to specific API Class grades. In its unground clinker form, it falls under this tariff item before final grinding to API specifications.
Slag Cement Clinker
Slag cement clinker is produced by blending blast furnace slag with Portland clinker components, offering enhanced sulfate resistance. As an unground clinker, it falls under this tariff item for hydraulic cement clinkers before final grinding into blended cement.
Supersulfate Cement Clinker
Supersulfate cement clinker combines Portland clinker with high ratios of calcined gypsum and slag, providing extreme sulfate resistance. In its unground clinker form, it falls under this tariff item for hydraulic cement clinkers prior to final grinding.
White Portland Cement Clinker
White Portland cement clinker is manufactured from low-iron raw materials, resulting in a light-colored clinker used for aesthetic concrete applications. As the unground clinker form, it falls under this tariff item before being ground into white cement.