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HSChapter 68
U.S. imports of building blocks & bricks of cement, concrete, or artificial stone (whether or not reinforced) (HS 681011) totaled $6.0M in April 2026, traded with 8 countries.
Last updated: April 2026 dataConcrete masonry units (CMUs) and similar structural blocks are the primary commercial products here, used across residential, commercial, and infrastructure construction. The US schedule includes a specialized line for magnesia-carbon bricks with high MgO content (6810110010) — a refractory product used in steelmaking furnaces — alongside standard building blocks (6810110070), making this heading unusually broad in its industrial reach. Canada and Mexico are the dominant suppliers for conventional CMUs, while Italy and India serve more specialized segments.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The HTS groups all building blocks and bricks of cement, concrete, or artificial stone under 681011 regardless of end use. Magnesia-carbon bricks with greater than 70% MgO and less than 30% chemical bond qualify for the specific line 6810110010 within this heading. Despite their refractory application in steelmaking, they meet the compositional definition of 'artificial stone' bricks under the chapter notes. Importers of refractory products should confirm the MgO content and bonding method in technical documentation to support the correct 10-digit classification.
Canadian-origin concrete building blocks that satisfy USMCA rules of origin are eligible for preferential tariff treatment. Importers must obtain a valid certificate or certification of origin and ensure the product meets the applicable regional value content or tariff-shift requirement under USMCA to claim the preference at entry.
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Monthly import values over time