Building blocks and bricks
Articles of cement, of concrete or of artificial stone, whether or not reinforced: > Tiles, flagstones, bricks and similar articles: > Building blocks and bricks
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Subheadings
Products classified under HTS 6810.11.00
Concrete Hollow Building Blocks
These are precast hollow blocks made from Portland cement, aggregates, and water, used primarily for constructing walls in residential and commercial buildings. They fall under HTS 6810.11.00 as building blocks of concrete, designed for load-bearing and non-load-bearing masonry applications.
Lightweight Concrete Building Bricks
Lightweight bricks produced with expanded clay aggregates or foam in a cement matrix, ideal for partition walls due to reduced weight. They qualify under HTS 6810.11.00 as concrete bricks for building purposes.
Autoclaved Aerated Concrete (AAC) Blocks
AAC blocks are lightweight, precast concrete with air-entraining agents, steam-cured for insulation and fire resistance in modern buildings. HTS 6810.11.00 covers these as concrete building blocks.
Cement Sandwich Building Blocks
Sandwich blocks with a concrete core and insulating foam layers bonded by cement, used for energy-efficient walls. Classified in HTS 6810.11.00 as composite concrete building blocks.
Vibrated Concrete Paver Bricks
Dense, vibrated concrete bricks for pedestrian pavements and driveways, with textured surfaces for grip. Under HTS 6810.11.00 when used as building bricks rather than decorative tiles.
High-Strength Concrete Curb Bricks
Heavy-duty concrete bricks for street curbs and gutters, molded with high cement ratios for durability. Fits HTS 6810.11.00 as specialized building bricks.
Precast Concrete Partition Bricks
Precast bricks for interior non-load-bearing partitions, often with alignment holes for rods. HTS 6810.11.00 for concrete building blocks.
Eco-Friendly Recycled Aggregate Concrete Blocks
Blocks made from cement and recycled construction waste aggregates for sustainable building. Remains under HTS 6810.11.00 as concrete blocks.
Split-Face Concrete Building Bricks
Concrete bricks with a textured, stone-like split face for aesthetic masonry veneers. Classified HTS 6810.11.00 as building bricks despite finish.
Perforated Concrete Breeze Blocks
Breeze blocks with decorative perforations for ventilation and screening in architecture. HTS 6810.11.00 for concrete building blocks.
Standard 8x8x16 Concrete Blocks
Nominal 8"x8"x16" gray concrete blocks, industry standard for masonry walls. Precisely HTS 6810.11.00 building blocks.
Architectural Concrete Screen Blocks
Patterned concrete blocks for privacy screens and facades, with geometric openings. Under HTS 6810.11.00 as decorative building blocks.
Solid Concrete Masonry Units (CMU)
Solid CMUs are dense concrete blocks without voids, molded from cement mixtures for high-strength foundation and retaining walls. Classified under HTS 6810.11.00 for their role as standard building bricks and blocks in construction.
Reinforced Concrete Interlocking Blocks
Interlocking blocks with embedded steel rebar for enhanced stability in seismic zones, made of vibrated concrete. Still under HTS 6810.11.00 if primarily concrete and classified as basic building blocks.
Insulated Concrete Form (ICF) Blocks
ICF blocks combine expanded polystyrene cores with concrete-receiving shells, poured on-site for walls. HTS 6810.11.00 if imported as preformed concrete building blocks.