Line pipe for oil or gas pipelines, external diameter over 406.4 mm (16 in.), of iron or steel, longitudinally welded not elsewhere specified

US trade by year

US imports were $226.3M in the 12 months to Aug 2026, up 47% on the 12 months to Aug 2017. US exports were $758K, down 86%. 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.

• Korea, South
• Greece
• Mexico
• Germany
• 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 92.3% 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, Greece was cheapest, at $1.16/kg: 6.4% below Korea, South.

Korea, South had the lowest price before freight and duty, $0.77/kg, but they added 60.4% to it.

Landed cost from Mexico fell 10% on a year earlier, to $1.25/kg, mostly on price: $0.92/kg then, $0.81/kg now.

How the market is shifting

Greece gained the most share: 24.5% of US imports over the last 12 months, up from 3.4% in the 12 months before. Germany lost the most: 3.7%, down from 33.8%. 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.

• Korea, South
• Greece
• Mexico
• Germany
• 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. June 2026 · Duty paid: all countries 48.5% → 27.7%.
2. January 2026 · Duty paid: Mexico 50.0% → 41.6%.
   • Welded Large Diameter Line Pipe From Japan: Continuation of Antidumping Duty OrderJan 16, 2026 · International Trade Administration
3. October 2025 · Duty paid: all countries 47.2% → 40.4%.
4. May 2025 · Duty paid: Korea, South 0.0% → 45.8%, Mexico 0.0% → 46.1%, Germany 12.5% → 50.0%, all countries 4.1% → 47.2%.
   • 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
5. August 2021 · Duty paid: all countries 6.7% → 1.5%.
   • Large Diameter Welded Pipe From Greece: Preliminary Results of Antidumping Duty Administrative Review; 2019-2020Aug 6, 2021 · International Trade Administration
   • Welded Line Pipe From the Republic of Korea and the Republic of Turkey: Continuation of Antidumping and Countervailing Duty OrdersJun 30, 2021 · International Trade Administration
6. July 2020 · Duty paid: all countries 8.7% → 2.0%.
   • Large Diameter Welded Pipe From the Republic of Korea: Initiation and Expedited Preliminary Results of Antidumping Duty and Countervailing Duty Changed Circumstances ReviewsJul 10, 2020 · International Trade Administration
   • 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
7. December 2019 · Duty paid: all countries 16.9% → 4.5%.
   • 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
8. December 2018 · Duty paid: Japan 0.0% → 25.0%.
   • 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. June–September 2018 · Duty paid: Greece 9.0% → 0.0%, Germany 0.0% → 21.2%, Canada 0.0% → 25.0%, all countries 0.0% → 13.8%.
   • Large Diameter Welded Pipe From Greece: Amended Preliminary Determination of Sales at Less Than Fair ValueSep 27, 2018 · International Trade Administration
   • Large Diameter Welded Pipe From Canada, China, Greece, India, Korea, and Turkey; Scheduling of the Final Phase of Countervailing Duty and Antidumping Duty InvestigationsSep 6, 2018 · International Trade Commission
   • Large Diameter Welded Pipe From the Republic of Turkey: Preliminary Determination of Sales at Less Than Fair Value and Postponement of Final DeterminationAug 27, 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 7305.12

• 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; 86 have reported 2025 so far.

The biggest market outside the US is Kuwait, which imported $54.8M of this product in 2025, none of it from the US.

Of these, imports into Saudi Arabia grew fastest: up 504% 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.