Standard International Trade Classification
U.S. imports of Prefabricated Structural Components of Cement, Concrete or Artificial Stone (SITC 66333) 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 dataFactory-cast structural elements — including precast concrete beams, columns, wall panels, bridge girders, and tunnel segments — are engineered to precise load-bearing specifications and play a critical role in accelerated construction timelines for infrastructure and commercial building projects. Unlike masonry units, these components are designed as finished structural members, often incorporating reinforcing steel, prestressing tendons, or embedded hardware. The high unit weight of precast concrete makes ocean freight economics a significant constraint, so imports tend to originate from nearby trading partners or serve highly specialized applications not available domestically.
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465 import shipments a month
While CBP does not require engineering certification at the border, precast structural components must comply with applicable US building codes (such as ACI 318 for concrete structures) and local jurisdiction requirements before installation. Buyers should confirm that foreign manufacturers can provide mix design records, compressive strength test reports, and reinforcement certifications to satisfy project engineers and building inspectors.
Reinforced and unreinforced precast structural components both fall within this heading — the SITC description explicitly covers these articles 'whether or not reinforced.' However, the HTS tariff schedule may distinguish between reinforced and unreinforced articles at the 10-digit level, so importers should verify the specific HTS subheading applicable to their product's reinforcement configuration with a licensed customs broker.
Basic heading 414 of 766 in section 6
Basic heading 66333 · $4.8M of $27.0B
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Imports · August 2026
origin
Canada and Mexico together supply 95% of it. Sweden pays 10.0% duty; Canada 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
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.