Harmonized System
U.S. imports of Seamless Iron & Non-Stainless Steel Drill Pipe for Oil & Gas Drilling (HS 730423) totaled $4.3M in August 2026, imported from 7 countries.
Importers of Seamless Iron & Non-Stainless Steel Drill Pipe for Oil & Gas Drilling paid $2.0M in duties in August 2026, an average duty rate of 49.96% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Seamless Iron & Non-Stainless Steel Drill Pipe for Oil & Gas Drilling imports of $4.3M in August 2026 ran 29% below the year-to-date monthly average of $6.1M.
Last updated: August 2026 dataCarbon and alloy (non-stainless) seamless drill pipe is the workhorse of rotary drilling strings worldwide, and its import classification under heading 730423 splits between nonalloy steel (7304233000) and alloy steel not stainless (7304236000 series), with the alloy lines further divided by OD and wall thickness. Alloy grades — particularly high-strength grades meeting API Spec 5DP — dominate deepwater and directional drilling applications where fatigue resistance is critical. Section 232 tariffs apply, and antidumping duty orders on drill pipe from certain countries have been in force for extended periods, making country-of-origin verification and scope analysis a routine compliance step for OCTG importers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
10 import shipments a month
Antidumping and countervailing duty orders on drill pipe often distinguish between nonalloy and alloy steel grades in their scope language, and the applicable duty rates can differ substantially. Importers should review the scope of any active orders against the country of origin and confirm the steel grade via mill test certificate before entry, as misclassification between 7304233000 and the 7304236000 series can result in significant duty underpayment liability.
Used or reconditioned drill pipe generally remains classifiable under the same HTS lines as new drill pipe, since the tariff schedule does not create separate provisions based on condition. However, CBP may scrutinize the condition and value of used OCTG, and some antidumping order scopes explicitly include used pipe — importers should confirm scope applicability and ensure accurate valuation declarations.
Subheading 10 of 13 in heading 7304
Subheading 730423 · $4.3M of $182.5M
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Imports · August 2026
origin
Austria and Mexico together supply 100% of it. Canada pays 50.0% duty; United Kingdom 25.0%.
customs district
destination
entry
rate provision · imports
duty collected equals 49.96% of imports for consumption.
ImportsExports
Imports
$4.3MYoY · free account
Exports
$2.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $62.6M of Seamless Iron & Non-Stainless Steel Drill Pipe for Oil & Gas Drilling and exported $31.0M.
Through August 2026. Source: U.S. Census Bureau.
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 | Duty Collected |
|---|---|---|---|---|---|
| 7304236045 | Drillpipe, Seamls, Aly Nt Stn, Dia<=168.3mm, Thk>9.5mm | $4.0M | 50.00% | 100.00% | $2.0M |
| 7304233000 | Oil Well Drill Pipe, of Iron or Nonalloy Steel | $7K | 25.00% | 100.00% | $2K |
| 7304236030 | Drill Pipe, Seam, Aly Nt Stn, Dia<=168.3mm, Thk<=9.5mm | $3K | 50.02% | 100.00% | $1K |
| 7304236060 | Drill Pipe, Seamless, Aly Stl Nt Stn, Diam > 168.3mm | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7304236000 | Oil Well Drill Pipe, of Alloy Steel not Stainless | $1.8M |
| 7304233000 | Oil Well Drill Pipe, of Iron or Nonalloy Steel | $300K |
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.