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HSChapter 73
U.S. imports of welded stainless steel oil & gas drilling casing and tubing (HS 730621) totaled $9K in April 2026, traded with 6 countries.
Welded Stainless Steel Oil & Gas Drilling Casing and Tubing imports of $9K in April 2026 ran 76% below the year-to-date monthly average of $39K.
Last updated: April 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.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| EL SALVADOR | -- | $75K | +$75K |
| CANADA | $3K | $45K | +$42K |
| BAHAMAS | -- | $8K | +$8K |
| FINLAND | $6K | -- | -$6K |
| POLAND | -- | $6K | +$6K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % |
|---|---|---|---|
| 7306214000 | OIL WELL CASING,WELD,STAINLESS,NOT THREAD/COUPLD | $6K | 0.00% |
| 7306213000 | OIL WELL CASING,WELDED,STAINLESS, THREAD/COUPLED | $3K | -- |
| 7306218010 | OILWELL TUBING, WELDED, STAINLESS, IMP W/ COUPLING | $0 | -- |
| 7306218050 | OILWELL TUBING, WELDED, STAINLESS, NT IMP W/ COUP | $0 | -- |
OIL WELL CASING,WELD,STAINLESS,NOT THREAD/COUPLD
OIL WELL CASING,WELDED,STAINLESS, THREAD/COUPLED
OILWELL TUBING, WELDED, STAINLESS, IMP W/ COUPLING
OILWELL TUBING, WELDED, STAINLESS, NT IMP W/ COUP
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7306218000 | TUBING OF STAINLESS STEEL NOT SEAMLSS NESOI | $134K |
| 7306213500 | CASING OF STAINLESS STEEL NOT SEAMLSS NESOI | $9K |
TUBING OF STAINLESS STEEL NOT SEAMLSS NESOI
22.3K kg
CASING OF STAINLESS STEEL NOT SEAMLSS NESOI
4.7K kg
ARTICLES OF IRON OR STEEL NESOI
HS 732690
STRUCTURES AND PARTS NESOI OF IRON OR STEEL
HS 730890
THREADED SCREWS AND BOLTS NESOI OF IRON OR STEEL
HS 731815
COOKING APPLIANCES ETC FOR GAS FUEL, IRON OR STEEL
HS 732111
NUTS OF IRON OR STEEL
HS 731816
TABLE, KITCHEN ETC ARTICLES & PTS, STAINLESS STEEL
HS 732393
| State | Imports | Exports | Balance |
|---|---|---|---|
| Alabama | -- | $75K | +$75K |
| North Carolina | -- | $35K | +$35K |
| California | -- | $14K | +$14K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| PORT EVERGLADES, FL | -- | $83K | +$83K |
| PEMBINA, ND | -- | $35K | +$35K |
| BUFFALO-NIAGARA FALLS, NY | -- | $10K | +$10K |