U.S. imports of Prefabricated Structural Components of Cement, Concrete, or Artificial Stone (HS 681091) totaled $4.8M in August 2026, imported from 23 countries.
Importers of Prefabricated Structural Components of Cement, Concrete, or Artificial Stone paid $26K in duties in August 2026, an average duty rate of 0.55% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Prefabricated Structural Components of Cement, Concrete, or Artificial Stone imports of $4.8M in August 2026 ran 30% above the year-to-date monthly average of $3.7M.
Last updated: August 2026 dataPrecast concrete structural elements — including beams, columns, wall panels, and bridge components — are classified here when manufactured off-site for assembly in building or civil engineering projects. Canada and Mexico are the primary US import sources, consistent with the logistical constraints of shipping heavy precast elements across long distances. Poland and Sweden also appear among top suppliers, reflecting European precast technology exports for specialized infrastructure applications.
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465 import shipments a month
Yes. The heading explicitly covers prefabricated structural components 'whether or not reinforced,' so the presence of embedded rebar, post-tensioning cables, or welded wire mesh does not change the classification. The steel reinforcement is considered incidental to the concrete article. However, if the steel component is the essential character of the article — for example, a steel frame with only a thin concrete facing — reclassification under a steel heading may be appropriate.
Precast concrete elements are extremely heavy and costly to ship over long distances, so proximity is a decisive commercial factor. Canadian producers can serve US border-state construction projects economically, and USMCA facilitates customs clearance for qualifying Canadian-origin goods. For large infrastructure projects, importers should also confirm that the structural specifications meet applicable US building codes and engineering standards, as these requirements are enforced at the project level rather than at customs.
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Subheading 4 of 4 in heading 6810
Subheading 681091 · $4.8M of $188.2M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 6810910000 | Prefb Strctrl Cmpnts O Cncrt Cmnt O Artf Stone | $4.8M | 0.55% | 5.38% | $26K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 6810910000 | Prefb Strctrl Cmpnts O Cncrt Cmnt O Artf Stone | $3.8M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Canada and Mexico together supply 95% of it. Sweden pays 10.0% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
94.6% enters free of duty; duty collected equals 0.55% of imports for consumption.
ImportsExports
Imports
$4.8MYoY · free account
Exports
$3.8MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $49.5M of Prefabricated Structural Components of Cement, Concrete, or Artificial Stone and exported $35.2M.
Through August 2026. Source: U.S. Census Bureau.