U.S. exports of Flexible Tubing of Base Metal, With or Without Fittings (SITC 69951) totaled $64.4M in August 2026.
Importers of Flexible Tubing of Base Metal, With or Without Fittings paid $5.4M in duties in August 2026, an average duty rate of 18.01% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataBase metal flexible tubing — whether of steel, copper, aluminum, or other base metals — serves critical roles in hydraulic systems, HVAC installations, and industrial fluid conveyance, where rigid piping is impractical. Classification hinges on the specific base metal composition and whether fittings are attached, as these factors can shift the applicable HTS heading. Imports of steel-based flexible tubing may be subject to Section 232 tariffs, making origin documentation and mill certificates essential for accurate duty assessment. Buyers should confirm whether fittings are integral or separately classified, as that distinction affects both duty rate and admissibility.
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2.1K import shipments a month
It can. When fittings are permanently attached and integral to the assembly, the product may still classify under the flexible tubing heading, but customs authorities may scrutinize whether the fittings constitute the essential character of the article. Importers should document the tubing's primary function and the nature of any attached fittings to support their classification position.
Steel-based flexible tubing can fall within the scope of Section 232 tariffs on steel articles, depending on the steel content and product form. Importers should review the specific product composition and consult a licensed customs broker to determine whether an exclusion applies or whether the Section 232 measure is triggered.
Basic heading 48 of 766 in section 6
Basic heading 69951 · $64.4M of $13.0B
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Exports · August 2026
destination
Trinidad and Tobago and Mexico together take 69% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$31.0MYoY · free account
Exports
$64.4MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $337.5M of Flexible Tubing of Base Metal, With or Without Fittings and exported $355.7M.
Through August 2026. Source: U.S. Census Bureau.