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SITCSection 3
U.S. imports of bituminous mixtures based on natural asphalt, natural bitumen & related binders (SITC 33543) totaled $8.2M in April 2026, traded with 14 countries.
Importers of Bituminous Mixtures Based on Natural Asphalt, Natural Bitumen & Related Binders paid $17K in duties in April 2026 — an effective duty rate of 10% on $172K in dutiable value, based on actual customs collections rather than the published tariff schedule. Bituminous Mixtures Based on Natural Asphalt, Natural Bitumen & Related Binders imports of $8.2M in April 2026 ran 49% above the year-to-date monthly average of $5.5M.
Last updated: April 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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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.
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Monthly import values over time