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HSChapter 73
U.S. imports of seamless stainless steel casing & tubing for oil & gas drilling (HS 730424) totaled $22.9M in July 2026, traded with 16 countries.
Importers of Seamless Stainless Steel Casing & Tubing for Oil & Gas Drilling paid $6.5M in duties in July 2026 — an effective duty rate of 46% on $14.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataStainless steel casing and tubing for oil and gas wells is classified under heading 730424, with the US schedule creating an unusually granular matrix of 10-digit lines segmented by product type (casing vs. tubing), end finish (threaded vs. NESOI), outer diameter, and wall thickness. Casing lines span from sub-215.9 mm OD up through diameters exceeding 406.4 mm (7304244080), while tubing lines cover OD ranges from below 114.3 mm through above 406.4 mm. The corrosion-resistant properties of stainless grades make this product essential for sour-gas and offshore completions, and importers should confirm whether active antidumping or countervailing duty orders on OCTG from the country of supply extend to stainless steel grades.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
140 shipments/mo
The US schedule separates threaded casing (e.g., 7304243010–7304243040) from non-threaded or otherwise finished casing (7304244010–7304244080) because threading is a value-added processing step that can affect both duty liability and antidumping scope determinations. Some trade-remedy orders are scoped to include or exclude pipe based on whether it is threaded and coupled, so the end-finish classification is commercially significant beyond mere tariff categorization.
Casing is run into the wellbore and cemented in place to stabilize the borehole and isolate formations; tubing is the inner string through which hydrocarbons flow to surface. API Spec 5CT governs both, with separate grade and dimensional requirements. Importers should reference the API product specification, the manufacturer's product description, and the purchase order to support the casing vs. tubing classification, as the two product types occupy different 10-digit lines with potentially different trade-remedy exposure.
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Subheading 4 of 13 in heading 7304
Subheading 730424 · $22.9M of $164.4M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7304246000 | Oil Well Tubing of Stainless Steel | $1.8M |
| 7304241000 | Oil Well Casing of Stainless Steel | $394K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$22.9MYoY · Pro
Exports
$2.2MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Japan and Czech Republic together supply 94% of it.
customs district
destination
entry
rate provision · imports
the effective duty rate is 28.60%.