Cement Sandwich Building Blocks
Cement sandwich building blocks consist of a concrete core with insulating foam layers bonded by cement, used for energy-efficient wall construction. They are composite concrete blocks, not reinforced, and are classifiable as building blocks under tariff item 6810.11.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 3% | — | 3% |
| 🇲🇽Mexico | 3% | — | 3% |
| 🇺🇸United States | 3% | — | 3% |
| 🇩🇪Germany | 3% | — | 3% |
| 🇯🇵Japan | 3% | — | 3% |
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 blocks are considered panels for insulation rather than structural blocks
Other concrete articles may apply if the insulating function dominates.
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 foam layers are not considered separate materials that could change classification
• Provide a breakdown of components to confirm the concrete matrix is primary
• Check for any insulation standards compliance
Related Products under Tariff item 6810.11.00
Architectural Concrete Screen Blocks
Architectural concrete screen blocks are precast concrete units with decorative geometric openings, used for privacy screens and building facades. They are made from cement, aggregates, and water, and are not reinforced, qualifying them as building blocks of concrete under tariff item 6810.11.00.
Autoclaved Aerated Concrete (AAC) Blocks
Autoclaved aerated concrete (AAC) blocks are lightweight precast concrete units containing air voids, produced with cement, lime, sand, and an expanding agent, then steam-cured under pressure. They are used for wall construction and insulation, and meet the definition of building blocks of concrete under tariff item 6810.11.00.
Concrete Hollow Building Blocks
Concrete hollow building blocks are precast units made from Portland cement, aggregates, and water, with hollow cores to reduce weight and cost. They are used for constructing walls in residential and commercial buildings and are standard building blocks of concrete under tariff item 6810.11.00.
Eco-Friendly Recycled Aggregate Concrete Blocks
Eco-friendly recycled aggregate concrete blocks are made from cement and recycled construction waste aggregates, used for sustainable building. They are unreinforced concrete blocks, qualifying as building blocks under tariff item 6810.11.00.
High-Strength Concrete Curb Bricks
High-strength concrete curb bricks are heavy-duty concrete units molded with high cement ratios for use in street curbs and gutters. They are building bricks of concrete, not reinforced, and fall under tariff item 6810.11.00.
Insulated Concrete Form (ICF) Blocks
Insulated concrete form (ICF) blocks combine expanded polystyrene cores with concrete-receiving shells, designed to be filled with concrete on-site for wall construction. When imported as preformed concrete building blocks, they are classifiable under tariff item 6810.11.00.