U.S. exports of Welded Stainless Steel Oil & Gas Drilling Casing and Tubing (HS 730621) totaled $145K in August 2026, exported to 7 countries.
Last updated: August 2026 dataStainless steel casing and tubing for oil and gas drilling wells — welded rather than seamless — is used in corrosive downhole environments where standard carbon steel OCTG would be unsuitable. The heading distinguishes casing from tubing and further splits by threading and coupling configuration: threaded-and-coupled casing (7306213000), non-threaded casing (7306214000), and tubing imported with (7306218010) or without (7306218050) couplings. South Korea and China are the leading suppliers to the US under this heading.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US tariff schedule assigns separate 10-digit lines based on whether casing is threaded and coupled (7306213000) versus not threaded or coupled (7306214000), and similarly for tubing imported with couplings (7306218010) versus without (7306218050). This distinction affects not only classification but also the scope of any applicable antidumping orders, which are often written to cover specific product configurations.
Yes. Seamless stainless steel OCTG falls under different headings in Chapter 73 (specifically within the seamless pipe and tube provisions), while 730621 is limited to welded products. API 5CT and API 5CRA specifications cover both seamless and welded corrosion-resistant alloy OCTG, so the manufacturing method — confirmed by the mill test report — is the classification-controlling factor, not the specification alone.
Subheading 10 of 10 in heading 7306
Subheading 730621 · $145K of $113.0M
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share |
|---|---|---|---|---|
| 7306213000 | Oil Well Casing, Welded, Stainless, Thread/Coupled | — | -- | -- |
| 7306214000 | Oil Well Casing, Weld, Stainless, Not Thread/Coupld | — | -- | -- |
| 7306218010 | Oilwell Tubing, Welded, Stainless, Imp W/ Coupling | — | -- | -- |
| 7306218050 | Oilwell Tubing, Welded, Stainless, Nt Imp W/ Coup | — | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7306218000 | Tubing of Stainless Steel not Seamlss NESOI | $145K |
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
—YoY · free account
Exports
$145KYoY · free account
Low of 8 reported months · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $250K of Welded Stainless Steel Oil & Gas Drilling Casing and Tubing and exported $1.2M.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · imports 8 of 12 months reported. Source: U.S. Census Bureau.
Exports · August 2026
destination
Canada and United Kingdom together take 90% of it.
customs district
origin
entry
rate provision · imports
None recorded for this period.