manufactured · input

Pipeline Steel (Large-Diameter Line Pipe)

High-strength steel pipe (API 5L X65-X80 grade) for crude and product pipelines. US pipeline steel is subject to Section 232 tariffs on imports; domestic producers (US Steel, Nucor) supply the majority of US needs. OCTG (oil country tubular goods) for well drilling is a related category.

12

Source countries

6

Companies

1

Goods affected

0

Claims on record

What depends on it

Goods that need this input

1 essential American goods rely on pipeline steel (large-diameter line pipe) somewhere upstream in their supply chain.

Where it comes from

Source countries

Share of global supply, by country.

Who makes it

Supplier companies

6 companies produce pipeline steel (large-diameter line pipe).

EUROPIPE GmbH

HQ DE22% share

JV of Salzgitter (Mannesmann) and Dillinger; the premier maker of large-diameter SAW line pipe (X70/X80) for major pipelines worldwide; US plant (Berg/Mukwonago, Baytown).

Tenaris S.A.(TS)

HQ LU20% share

World-leading seamless steel pipe maker for oil & gas (OCTG, line pipe); part of the Techint/Rocca group; large US footprint (Bay City TX mill).

United States Steel Corporation(X)

HQ US15% share

Integrated steelmaker; flat-rolled hot-dip galvanized, Galvalume and pre-painted (PPGI) coated sheet. Acquired by Nippon Steel in 2025.

Welspun Corp Ltd.(540116.BO)

HQ IN15% share

One of the world's largest line-pipe (LSAW/HSAW/ERW) makers; US plant (Little Rock, Arkansas) supplies API line pipe.

Vallourec S.A.(VK.PA)

HQ FR12% share

French premium seamless tube/OCTG and line-pipe producer for energy and industry.

Nucor Corporation(NUE)

HQ US

Charlotte, NC-based steel company (NYSE: NUE); largest US steel producer by volume; all EAF (electric arc furnace) production. Plate Mill Group: three facilities — Hertford County (Cofield) NC, Brandenburg KY, Tuscaloosa AL. Combined ~3.5 million tons/year plate capacity (cut-to-length and discrete plate). Products: carbon, HSLA, alloy, and pressure vessel-quality steel plate. Markets served include heavy equipment, dump bodies, on-highway trucks, rail cars, barges, ships — fire apparatus structural steel falls in this category. Buy America compliance: all domestic EAF production qualifies. Nucor also owns David J. Joseph (scrap procurement) and various downstream fabricators. Largest US recycled-content steel producer.