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

US trade by year

US imports were $495K in the 12 months to Aug 2026, down 100% on the 12 months to Aug 2017. US exports were $2.3M, down 84%. 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.

• Mexico
• Vietnam
• China
• Austria
• 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 98.0% 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, China was cheapest, at $2.15/kg: 26.8% below Mexico.

How the market is shifting

Vietnam gained the most share: 41.9% of US imports over the last 12 months, up from 0.0% in the 12 months before. Canada lost the most: 0.9%, down from 27.9%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months.

• Mexico
• Vietnam
• China
• Austria
• 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. July 2022 · Duty paid: all countries 25.0% → 0.0%.
   • Welded Line Pipe From the Republic of Korea: Final Results of Antidumping Duty Administrative Review; 2019-2020Jun 27, 2022 · International Trade Administration
   • Welded Line Pipe From the Republic of Turkey: Rescission of the Antidumping Duty Administrative Review; 2019-2020May 10, 2022 · International Trade Administration
2. July 2019 · Duty paid: all countries 21.2% → 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
3. February 2019 · Duty paid: all countries 24.7% → 17.0%.
   • Large Diameter Welded Pipe From the Republic of Turkey: Final Affirmative Countervailing Duty DeterminationFeb 27, 2019 · International Trade Administration
   • Large Diameter Welded Pipe From the Republic of Korea: Final Determination of Sales at Less Than Fair ValueFeb 27, 2019 · International Trade Administration
   • Large Diameter Welded Pipe From the Republic of Korea: Final Affirmative Countervailing Duty DeterminationFeb 27, 2019 · International Trade Administration
4. September–November 2018 · Duty paid: Canada 2.1% → 25.0%, Turkey 12.9% → 25.0%, all countries 5.7% → 23.9%.
   • 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

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 7305.19

• 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; 98 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.

The biggest market outside the US is Italy, which imported $278.8M of this product in 2025, none of it from the US.

Of these, imports into Poland grew fastest: up 140% 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.