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SITCSection 6
U.S. imports of seamless line pipe of iron or non-alloy steel for oil & gas pipelines (SITC 67912) totaled $32.8M in April 2026, traded with 33 countries.
Importers of Seamless Line Pipe of Iron or Non-Alloy Steel for Oil & Gas Pipelines paid $14.5M in duties in April 2026 — an effective duty rate of 46% on $31.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataSeamless line pipe used in oil and gas transmission pipelines is a high-specification product governed by API 5L and related standards, with wall thickness, yield strength grade (e.g., X52, X65, X70), and outside diameter driving both commercial value and HTS classification. This product has been a focal point of Section 232 tariff actions and antidumping proceedings, reflecting its strategic importance to domestic energy infrastructure. Importers must ensure that pipe meets the applicable API or ASTM specification and that country-of-origin documentation is airtight, as misclassification between line pipe and other seamless pipe categories carries significant duty consequences. The energy sector's project-driven demand cycles create pronounced seasonality in import volumes.
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API 5L is the dominant specification for line pipe used in oil and gas transmission, covering grades from Grade B through X80 and higher. ASTM A106 may also apply for certain pressure service applications. The applicable specification and grade should be documented on the mill test certificate accompanying each shipment.
Both measures can apply simultaneously and are additive — an importer may owe both the Section 232 tariff and any applicable antidumping or countervailing duty on the same shipment. Active antidumping orders on seamless pipe from specific countries should be checked against the country of origin and pipe specification before contracting, as scope determinations can be product-specific.
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Monthly import values over time