U.S. imports of Bituminous Mixtures Based on Natural Asphalt, Natural Bitumen & Related Binders (SITC 33543) totaled $17.4M in August 2026, imported from 18 countries.
Importers of Bituminous Mixtures Based on Natural Asphalt, Natural Bitumen & Related Binders paid $19K in duties in August 2026, an average duty rate of 0.11% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Bituminous Mixtures Based on Natural Asphalt, Natural Bitumen & Related Binders imports of $17.4M in August 2026 ran 76% above the year-to-date monthly average of $9.9M.
Last updated: August 2026 dataFormulated from natural asphalt, natural bitumen, petroleum bitumen, mineral tar, or mineral tar pitch as the binding agent, these mixtures are engineered products used in road surfacing, roofing, and industrial waterproofing rather than raw refinery outputs. The binder source — natural versus petroleum-derived — affects both performance characteristics and classification, making feedstock documentation essential for accurate SITC coding. Mixture composition, aggregate type, and binder content are the commercial parameters that drive specification compliance in construction procurement.
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1.2K import shipments a month
The key distinction is that mixtures under this heading contain a bituminous binder combined with aggregate, filler, or other materials to form a ready-to-use or semi-processed product. A straight petroleum bitumen shipment is the binder alone. Importers should retain formulation records showing binder type and aggregate composition, as customs authorities may request this documentation to confirm correct classification.
Hot-mix asphalt (HMA) and warm-mix asphalt for road paving are the dominant applications, alongside modified bitumen roofing sheets and waterproofing membranes. Specialty mixtures using natural lake asphalt (such as Trinidad Lake Asphalt) are valued for high-traffic and airport runway applications due to their superior rutting resistance. Specification requirements vary significantly by end use, so buyers should confirm mixture grade against project engineering standards.
Basic heading 16 of 32 in section 3
Basic heading 33543 · $17.4M of $21.4B
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Imports · August 2026
origin
Canada and Belgium together supply 93% of it.
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
$17.4MYoY · free account
Exports
$11.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $111.2M of Bituminous Mixtures Based on Natural Asphalt, Natural Bitumen & Related Binders and exported $107.8M.
Through August 2026. Source: U.S. Census Bureau.