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 > Building blocks and bricks
Duty Rate (from China)
Subheadings
Products classified under Tariff item 6810.11
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.
6810.11.00Autoclaved 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.
6810.11.00Carbon-Magnesia Converter Bricks
Carbon-magnesia converter bricks are refractory bricks containing over 70% magnesia and up to 29% carbon, bonded with pitch for use in basic oxygen furnace (BOF) converter mouths and trunnions. Their high magnesia content provides oxidation resistance and durability in extreme steelmaking conditions. They are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
6810.11.00Cement 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.
6810.11.00Concrete Corner Blocks
Concrete corner blocks are angled precast concrete blocks designed for clean wall corners in construction. They are unreinforced and used in masonry applications to create neat edges. These blocks are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
6810.11.00Concrete Curbing Blocks
Concrete curbing blocks are precast concrete blocks shaped for edging lawns, driveways, and paths, providing a stable border. They are unreinforced and used in landscaping construction. These blocks are classified under tariff item 6810.11.00 as building blocks of artificial stone.
6810.11.00Concrete Foundation Blocks
Concrete foundation blocks are precast blocks for pier-and-beam foundations, providing level bases for structures. They are unreinforced and used in construction to support loads. These blocks are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
6810.11.00Concrete Garden Border Blocks
Concrete garden border blocks are small scalloped or rectangular concrete blocks for defining garden beds and paths. They are unreinforced and used in landscaping to create borders. These blocks are classified under tariff item 6810.11.00 as building blocks of artificial stone.
6810.11.00Concrete Half-Blocks for Walls
Concrete half-blocks for walls are half-height concrete blocks used for constructing shorter walls, retaining edges, or bonding full courses. They are unreinforced and used in masonry applications. These blocks are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
6810.11.00Concrete 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.
6810.11.00Concrete Interlocking Paver Blocks
Concrete interlocking paver blocks are precast concrete blocks designed with interlocking shapes for use in patios, walkways, and driveways. They are unreinforced and used in construction for paving surfaces. These blocks are classified under tariff item 6810.11.00 as building blocks of artificial stone.
6810.11.00Concrete Lintel Blocks
Concrete lintel blocks are U-shaped blocks for door and window headers in construction. They are unreinforced and used to support loads above openings. These blocks are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
6810.11.00Concrete Retaining Wall Blocks
Concrete retaining wall blocks are segmental concrete blocks stacked without mortar for gravity retaining walls up to certain heights. They are unreinforced and designed for soil retention in civil engineering. These blocks are classified under tariff item 6810.11.00 as building blocks of artificial stone.
6810.11.00Concrete Screen Blocks
Concrete screen blocks are lattice-patterned building units made of cement, concrete, or artificial stone, designed for decorative privacy screens and facades. They fall under tariff item 6810.11.00 as building blocks and bricks of cement or concrete, whether or not reinforced, per Chapter 68.
6810.11.00Concrete Utility Blocks
Concrete utility blocks are versatile, unreinforced concrete units used for cable trenches, meter bases, or similar infrastructure applications. They are classified under tariff item 6810.11.00 as building blocks and bricks of cement, concrete, or artificial stone, per Chapter 68.
6810.11.00Eco-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.
6810.11.00High-Magnesia Carbon Kiln Blocks
High-magnesia carbon kiln blocks are heavy-duty refractory blocks with over 70% magnesia and controlled carbon under 30%, resin-bonded for cement kiln transition zones. They withstand abrasion and alkali attack in high-temperature industrial processes. These blocks fall under tariff item 6810.11.00 as building blocks of artificial stone.
6810.11.00High-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.
6810.11.00Insulated 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.
6810.11.00Lightweight Concrete Breeze Blocks
Lightweight concrete breeze blocks are building units with voids for ventilation and reduced weight, typically used in non-load-bearing walls. They are classified under tariff item 6810.11.00 as unreinforced building blocks of cement, concrete, or artificial stone, per Chapter 68.
6810.11.00Lightweight Concrete Building Bricks
Lightweight concrete building bricks are produced with expanded clay aggregates or foam in a cement matrix, making them ideal for partition walls due to reduced weight. They are unreinforced concrete bricks for building purposes, qualifying under tariff item 6810.11.00.
6810.11.00Magnesia Carbon Building Bricks
Magnesia carbon building bricks are high-performance bricks with over 70% magnesia and carbon content under 30%, chemically bonded using resin or pitch. They are designed for extreme heat resistance in industrial construction, such as furnace linings and high-temperature environments. They are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
6810.11.00Magnesia-Resin EAF Roof Bricks
Magnesia-resin EAF roof bricks are roof bricks for electric arc furnaces (EAF), containing over 70% magnesia and less than 30% carbon, resin-bonded for high-temperature steelmaking roofs. They offer excellent slag resistance and durability in extreme conditions. These bricks are classified under tariff item 6810.11.00 as building blocks of artificial stone.
6810.11.00Perforated Concrete Breeze Blocks
Perforated concrete breeze blocks are decorative concrete blocks with perforations for ventilation and screening in architecture. They are unreinforced concrete building blocks, classifiable under tariff item 6810.11.00.
6810.11.00Perforated Concrete Partition Blocks
Perforated concrete partition blocks feature holes for wiring or piping, designed for interior partition walls in commercial buildings. They are classified under tariff item 6810.11.00 as unreinforced building blocks of cement, concrete, or artificial stone, per Chapter 68.
6810.11.00Pitch-Bonded Magnesia Furnace Bricks
Pitch-bonded magnesia furnace bricks are bricks with over 70% magnesia and low carbon content, engineered for rotary kilns and furnaces in cement and lime production. Their chemical bonding provides thermal shock resistance and durability in high-temperature environments. They are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
6810.11.00Precast Concrete Partition Bricks
Precast concrete partition bricks are precast units for interior non-load-bearing partitions, often with alignment holes for rods. They are unreinforced concrete building bricks, qualifying under tariff item 6810.11.00.
6810.11.00Reinforced Concrete Interlocking Blocks
Reinforced concrete interlocking blocks are interlocking blocks with embedded steel rebar for enhanced stability in seismic zones, made of vibrated concrete. They are primarily concrete building blocks, and despite the reinforcement, they fall under tariff item 6810.11.00 as building blocks.
6810.11.00Resin-Bonded Magnesia Ladle Bricks
Resin-bonded magnesia ladle bricks are specialized bricks for steel ladle linings, featuring over 70% magnesia, trace to less than 30% carbon, and resin chemical bonding for superior erosion resistance. They are used in molten metal handling in steel mills. These bricks fall under tariff item 6810.11.00 as building blocks of artificial stone.
6810.11.00Resin Magnesia Tundish Bricks
Resin magnesia tundish bricks are tundish working layer bricks with high magnesia (over 70%), low carbon (under 30%), and resin bonding for continuous steel casting. They are erosion and corrosion resistant, making them ideal for steelmaking applications. They are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
6810.11.00Solid Concrete Masonry Units (CMU)
Solid concrete masonry units (CMUs) are dense concrete blocks without voids, molded from cement mixtures for high-strength foundation and retaining walls. They are standard building blocks of concrete, qualifying under tariff item 6810.11.00.
6810.11.00Sound-Absorbing Concrete Blocks
Sound-absorbing concrete blocks are engineered with internal textures or materials to reduce noise, used in urban barriers or studios. They are classified under tariff item 6810.11.00 as unreinforced building blocks of cement, concrete, or artificial stone, per Chapter 68.
6810.11.00Split-Face Concrete Building Bricks
Split-face concrete building bricks are concrete bricks with a textured, stone-like split face for aesthetic masonry veneers. They are building bricks of concrete, not reinforced, and fall under tariff item 6810.11.00.
6810.11.00Standard 8x8x16 Concrete Blocks
Standard 8x8x16 concrete blocks are nominal 8-inch by 8-inch by 16-inch gray concrete blocks, the industry standard for masonry walls. They are unreinforced concrete building blocks, precisely falling under tariff item 6810.11.00.
6810.11.00Thermal Mass Concrete Blocks
Thermal mass concrete blocks are dense, unreinforced blocks designed to store and release heat for passive solar buildings. They are classified under tariff item 6810.11.00 as building blocks of cement, concrete, or artificial stone, per Chapter 68.
6810.11.00Vibrated Concrete Paver Bricks
Vibrated concrete paver bricks are dense, vibrated concrete bricks for pedestrian pavements and driveways, with textured surfaces for grip. When used as building bricks rather than decorative tiles, they fall under tariff item 6810.11.00.