Line pipe for oil or gas pipelines, external diameter over 406.4 mm (16 in.), of iron or steel, longitudinally submerged arc welded

US trade by year

US imports were $392.7M in the 12 months to Aug 2026, up 26% on the 12 months to Aug 2017. US exports were $14.6M, down 67%. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

• Turkey
• Germany
• Korea, South
• Greece
• All countries

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.

The 3 largest suppliers had 71.8% of US imports over the last 12 months.

Landed cost by origin

What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.

• Price
• Freight and insurance
• Duty

Landed at a US port, Turkey was cheapest, at $1.60/kg: 6.6% below Korea, South.

Korea, South had the lowest price before freight and duty, $1.03/kg, but they added 66.6% to it.

Landed cost from India rose 46% on a year earlier, to $3.48/kg, mostly on duty: $0.00/kg then, $1.11/kg now.

How the market is shifting

Turkey gained the most share: 27.2% of US imports over the last 12 months, up from 3.9% in the 12 months before. Japan lost the most: 3.8%, down from 22.0%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

• Turkey
• Germany
• Korea, South
• Greece
• All countries

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

1. May–June 2026 · Duty paid: Turkey 37.1% → 19.9%, Japan 50.0% → 13.1%, all countries 43.6% → 32.9%.
2. October 2025 · Duty paid: Korea, South 42.4% → 50.0%, Japan 43.3% → 49.9%.
3. May–July 2025 · Duty paid: Korea, South 0.6% → 40.2%, Japan 0.6% → 41.6%, all countries 7.7% → 36.6%.
   • Large Diameter Welded Pipe From Canada, the People's Republic of China, Greece, India, the Republic of Korea, and the Republic of Türkiye: Continuation of Antidumping Duty and Countervailing Duty OrdersMay 14, 2025 · International Trade Administration
4. December 2024 · Duty paid: all countries 0.2% → 6.1%.
   • Notice of Modification: China's Acts, Policies and Practices Related to Technology Transfer, Intellectual Property and InnovationSep 18, 2024 · Office of the US Trade Representative
   • Circular Welded Carbon Steel Standard Pipe and Tube Products From the Republic of Türkiye; Welded Line Pipe From the Republic of Türkiye; Certain Oil Tubular Goods From the Republic of Türkiye; and Large Diameter Welded Pipe From the Republic of Türkiye: Preliminary Results of Countervailing Duty Changed Circumstances ReviewsSep 10, 2024 · International Trade Administration
   • Circular Welded Carbon Steel Standard Pipe and Tube Products From the Republic of Türkiye; Welded Line Pipe From the Republic of Türkiye; Certain Oil Tubular Goods From the Republic of Türkiye; and Large Diameter Welded Pipe From the Republic of Türkiye: Preliminary Results of Antidumping Duty Changed Circumstances ReviewSep 10, 2024 · International Trade Administration
5. June 2020 · Duty paid: United Kingdom 25.0% → 13.5%.
   • Large Diameter Welded Pipe From Greece: Final Results of Antidumping Duty Changed Circumstances ReviewsJun 22, 2020 · International Trade Administration
   • Large Diameter Welded Pipe From India: Final Results of Antidumping Duty and Countervailing Duty Changed Circumstances ReviewsMay 6, 2020 · International Trade Administration
   • Large Diameter Welded Pipe From Greece: Preliminary Results of Antidumping Duty Changed Circumstances ReviewMay 6, 2020 · International Trade Administration
6. December 2019–January 2020 · Duty paid: Japan 17.5% → 2.9%, all countries 13.0% → 3.5%.
   • Large Diameter Welded Pipe From India: Initiation and Expedited Preliminary Results of Antidumping Duty and Countervailing Duty Changed Circumstances ReviewsDec 18, 2019 · International Trade Administration
   • Welded Large Diameter Line Pipe From Japan: Continuation of Antidumping Duty OrderOct 11, 2019 · International Trade Administration
7. June–August 2019 · Duty paid: Japan 15.1% → 5.9%, Mexico 24.9% → 0.0%.
   • Welded Line Pipe From the Republic of Korea: Final Results of Antidumping Duty Administrative Review and Final Determination of No Shipments; 2016-2017Jun 14, 2019 · International Trade Administration
   • Request for Comments Concerning Proposed Modification of Action Pursuant to Section 301: China's Acts, Policies, and Practices Related to Technology Transfer, Intellectual Property, and InnovationMay 17, 2019 · Office of the US Trade Representative
   • Large Diameter Welded Pipe From Canada: Antidumping Duty OrderMay 2, 2019 · International Trade Administration
8. October–December 2018 · Duty paid: Turkey 12.8% → 0.0%, Japan 24.9% → 8.8%, all countries 20.2% → 10.7%.
   • Large Diameter Welded Pipe From the People's Republic of China: Final Determination of Sales at Less Than Fair ValueNov 14, 2018 · International Trade Administration
   • Large Diameter Welded Pipe From India: Final Determination of Sales at Less Than Fair Value; 2017Nov 14, 2018 · International Trade Administration
   • Countervailing Duty Investigation of Large Diameter Welded Pipe From the People's Republic of China: Final Affirmative DeterminationNov 14, 2018 · International Trade Administration
9. April–July 2018 · Duty paid: Japan 0.0% → 20.5%, Mexico 0.0% → 24.9%, all countries 2.4% → 20.2%.
   • Welded Line Pipe From the Republic of Korea: Final Results of Antidumping Duty Administrative Review; 2015-2016Jul 18, 2018 · International Trade Administration
   • Large Diameter Welded Pipe From the People's Republic of China: Preliminary Affirmative Countervailing Duty Determination and Alignment of Final Determination With Final Antidumping DeterminationJun 29, 2018 · International Trade Administration
   • Large Diameter Welded Pipe From the Republic of Korea: Preliminary Affirmative Countervailing Duty Determination and Alignment of Final Determination With Final Antidumping Duty DeterminationJun 29, 2018 · International Trade Administration

Federal Register notices from the last 12 months that list this product's tariff codes. A notice can add a duty, exclude products from one or only mention them, so read each for what it changes. Search the Federal Register for 7305.11

• Welded Large Diameter Line Pipe From Japan: Continuation of Antidumping Duty OrderJan 16, 2026 · International Trade Administration

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 90 have reported 2025 so far.

The biggest market outside the US is Australia, which imported $279.7M of this product in 2025, 1.3% of that from the US.

Of these, imports into Romania grew fastest: up 1436% from 2024 to 2025.

Related products

Other products under heading 7305: tubes and pipes not elsewhere specified (welded etc.), having internal and external cross sections with an external diameter of over 406.4 mm (16 in.), of iron or steel. US trade over the 12 months to August 2026.