Product classification
HS code for Seamless stainless pipe: 7304.11
Iron or steel (excluding cast iron), seamless, line pipe of a kind used for oil or gas pipelines, of stainless steel.
Classification of seamless stainless pipe under HS 7304.11
HS code 7304.11 is a highly specific classification for seamless line pipe of a kind used for oil or gas pipelines, manufactured from stainless steel. Stainless steel is defined in the HS nomenclature as alloy steel containing, by weight, 1.2% or less of carbon and 10.5% or more of chromium. The \"line pipe\" designation refers to pipes used for the transmission of fluids (oil, gas, water) over long distances, often under high pressure. Because these pipes are seamless, they offer superior strength and resistance to leakage compared to welded alternatives. Classification under 7304.11 requires the product to meet both the material specification (stainless steel) and the functional specification (line pipe for oil/gas). If the pipe is intended for general structural use or mechanical applications, it would likely fall under a different subheading within 7304. The distinction is critical for customs purposes, as line pipes are often subject to different trade regulations and anti-dumping duties than general-purpose tubing. The manufacturing process involves hot-working a solid stainless steel billet to create a hollow shell, which is then finished to the required dimensions. The integrity of the metal and the absence of a seam are vital for the safety of energy infrastructure.
- Covers
- Stainless steel line pipe for oil transport
- Gas pipeline tubes (seamless stainless)
- Offshore drilling line pipes
- High-pressure stainless steel transmission pipes
- Also under 7304.11
- Tenaris seamless stainless pipe
- Vallourec stainless line pipe
- Sumitomo Metal Industries stainless pipe
- ArcelorMittal stainless pipeline
- Sandvik stainless steel tubes
Codes often confused with 7304.11
Common mistake. Seamless stainless line pipe is often misclassified under 7304.41 or 7304.49, which are for other stainless steel tubes not used for oil or gas lines. Another common error is 7305.11, which covers welded line pipe of stainless steel; the \"seamless\" vs \"welded\" distinction is a primary classification factor.
Top exporters and importers of HS 730411 (the code used for seamless stainless pipe), 2025
In 2025, the largest exporter of HS 730411 (the code used for seamless stainless pipe) in UN Comtrade data was Saudi Arabia, with 20% of world exports; the largest importer in UN Comtrade data was the United Arab Emirates, with about 12% 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 730411, not only seamless stainless pipe.
Top exporters 2025 · share of world exports
- 1 Saudi Arabia $97M 20% of world exports
- 2 Norway $89M 18% of world exports
- 3 China $63M 13% of world exports
World total: $485M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United Arab Emirates* ~$77M 12% of world imports · partner records ↗
- 2 Angola $65M 9.9% of world imports
- 3 Indonesia $57M 8.8% of world imports
World total: $653M 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 stainless pipe
Brazil classifies seamless stainless pipe under NCM 7304.11.00: HS 7304.11 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 stainless pipe
What is the HS code for Seamless stainless pipe?
The HS code for Seamless stainless pipe is 730411 (Iron or steel (excluding cast iron); seamless, line pipe of a kind used for oil or gas pipelines, of stainless steel). The HS code for seamless stainless steel line pipe used for oil or gas pipelines is 7304.11.
How do I classify Seamless stainless pipe for customs?
Seamless stainless pipe is classified under HS code 730411 — Iron or steel (excluding cast iron); seamless, line pipe of a kind used for oil or gas pipelines, of stainless steel. This is a 6-digit subheading level code.
What makes a pipe \"line pipe\"?
Line pipe is specifically designed and tested for the continuous transport of oil, gas, or water in pipeline systems, often following API standards.
Which countries are the top exporters of seamless stainless pipe (HS 730411)?
In 2025, the top exporters of HS 730411 (the code used for seamless stainless pipe) in UN Comtrade data were Saudi Arabia ($97M, 20% of world exports), Norway ($89M) and China ($63M). World exports came to about $485M, 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 stainless pipe (HS 730411)?
In 2025, the top importers of HS 730411 (the code used for seamless stainless pipe) in UN Comtrade data were the United Arab Emirates (about $77M, 12% of world imports), Angola ($65M) and Indonesia ($57M). World imports came to about $653M, 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 stainless pipe the same in all countries?
The base HS code 730411 for Seamless stainless 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 stainless pipe in Brazil?
In Brazil, seamless stainless pipe (HS 730411) is classified under NCM 7304.11.00.