Product classification
HS code for Seamless steel line pipe: 7304.19
Iron or steel (excluding cast iron or stainless steel), seamless, line pipe of a kind used for oil or gas pipelines.
Classification of seamless steel line pipe under HS 7304.19
Seamless steel line pipe is classified under HS code 7304.19. This classification applies to tubes and pipes of a kind used for oil or gas pipelines, manufactured without a welded seam. Line pipes are designed to transport oil, gas, or water over long distances from the extraction site to refineries or storage facilities. Heading 7304 covers seamless products, and the 10-series subheadings (7304.11 and 7304.19) are specifically for line pipe. Subheading 7304.19 is used for pipes made of iron or steel other than stainless steel. These pipes are typically manufactured to API 5L specifications, which define the requirements for various grades of line pipe. The classification is based on the intended use (pipelines) and the manufacturing method (seamless), as well as the material composition (non-stainless steel).
- Covers
- API 5L seamless line pipe (Grades B, X42, X52, etc.)
- Seamless pipes for natural gas transmission
- Seamless oil transport pipelines
- Hot-finished seamless line pipe for energy infrastructure
- High-pressure seamless line pipe
- Also under 7304.19
- Tenaris API 5L pipe
- Vallourec seamless line pipe
- Sumitomo Metal Industries seamless pipe
- JFE Steel seamless pipe
- ArcelorMittal seamless pipeline
Codes often confused with 7304.19
Common mistake. Seamless line pipe is often misclassified under 7304.39 or 7304.59, which are general-purpose subheadings for "other" seamless pipes. However, if the pipe is specifically designed and rated for use in oil or gas pipelines (e.g., meeting API 5L standards), 7304.19 takes precedence due to its specific functional description. Another common error is confusing it with welded line pipe, which falls under 7305 (for large diameters) or 7306 (for smaller diameters). Additionally, line pipe made of stainless steel must be classified under 7304.11, not 7304.19. It is vital to distinguish line pipe from casing (7304.29), as line pipe is for transport while casing is for wellbore lining.
Top exporters and importers of HS 730419 (the code used for seamless steel line pipe), 2025
In 2025, the largest exporter of HS 730419 (the code used for seamless steel line pipe) in UN Comtrade data was China, with 44% of world exports; the largest importer in UN Comtrade data was the United States, with 13% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 730419, not only seamless steel line pipe.
Top exporters 2025 · share of world exports
- 1 China $1.8B 44% of world exports
- 2 Italy $527M 13% of world exports
- 3 Germany $280M 6.7% of world exports
World total: $4.2B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $586M 13% of world imports
- 2 United Arab Emirates* ~$536M 12% of world imports · partner records ↗
- 3 Norway $299M 6.9% of world imports
World total: $4.3B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for seamless steel line pipe
Brazil classifies seamless steel line pipe under NCM 7304.19.00: HS 7304.19 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
EU Regulatory Requirements
This product falls under the Carbon Border Adjustment Mechanism (CBAM). Importers to the EU must declare embedded carbon emissions and purchase CBAM certificates.
Questions about seamless steel line pipe
What is the HS code for Seamless steel line pipe?
The HS code for Seamless steel line pipe is 730419 (Iron or steel (excluding cast iron or stainless steel); seamless, line pipe of a kind used for oil or gas pipelines). The HS code for seamless steel line pipe (non-stainless) used for oil or gas pipelines is 7304.19.
How do I classify Seamless steel line pipe for customs?
Seamless steel line pipe is classified under HS code 730419 — Iron or steel (excluding cast iron or stainless steel); seamless, line pipe of a kind used for oil or gas pipelines. This is a 6-digit subheading level code.
Can 7304.19 be used for water pipes?
While 7304.19 is specifically described for oil and gas pipelines, pipes of the same specification used for high-pressure water transmission are often classified here if they meet the technical standards of line pipe. However, general-purpose water pipes are usually classified under 7304.39 or 7304.59.
Which countries are the top exporters of seamless steel line pipe (HS 730419)?
In 2025, the top exporters of HS 730419 (the code used for seamless steel line pipe) in UN Comtrade data were China ($1.8B, 44% of world exports), Italy ($527M) and Germany ($280M). World exports came to about $4.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of seamless steel line pipe (HS 730419)?
In 2025, the top importers of HS 730419 (the code used for seamless steel line pipe) in UN Comtrade data were the United States ($586M, 13% of world imports), the United Arab Emirates (about $536M) and Norway ($299M). World imports came to about $4.3B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Seamless steel line pipe the same in all countries?
The base HS code 730419 for Seamless steel line pipe is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for seamless steel line pipe in Brazil?
In Brazil, seamless steel line pipe (HS 730419) is classified under NCM 7304.19.00.