Construction Grade Gypsum
High-purity gypsum lumps selected for wallboard manufacturing, in crude form before calcining. This tariff item covers gypsum in the crude state or after mechanical processing such as crushing, but not calcined products.
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 gypsum is calcined to produce plaster
Calcined gypsum plasters are classified under a separate tariff item in the same heading.
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 lumps are not calcined or mixed with accelerators or retarders, which would shift classification to heading 2520.20
• Provide a detailed product description on customs documents
• Consider storage and handling to prevent moisture absorption
Related Products under Tariff item 2520.10.00
Agricultural Gypsum Pellets
Agricultural gypsum pellets made from natural, uncalcined gypsum for soil pH adjustment and sulfur supplementation. The pelleting process is mechanical and does not alter the chemical structure, keeping it within the scope of this heading.
Anhydrite Mineral
Natural anhydrite mineral, a calcium sulfate without water of crystallization, mined as rock or powder. It is explicitly listed in the tariff item alongside gypsum and is not subjected to calcination or other chemical processing.
Blue Diamond Gypsum
High-grade gypsum ore from Blue Diamond Mines, Nevada, unprocessed and shipped in bulk for wallboard manufacturing. As crude gypsum, it falls under this tariff item, which covers products in the crude state or after limited mechanical processing.
Calcined-Free Gypsum Aggregate
Crushed gypsum aggregate for concrete admixture, verified non-calcined and used to improve workability. The crushing process is mechanical and does not change the product's structure, so it remains classified as crude gypsum under this item.
Dentstone Gypsum Rock
Specialty gypsum ore for dental stone production, selected for uniform crystals and high strength. As uncalcined gypsum, it falls under this item; calcination into alpha hemihydrate would change its classification.
Eco-Friendly Recycled Gypsum
Gypsum recovered from drywall waste, cleaned to natural equivalent purity and free of paper or plastics. As reprocessed crude gypsum for sustainable building, it falls under this tariff item, which covers gypsum in the crude state or after mechanical cleaning.