HS code · 6-digit subheading

HS Code 7304.29 – Iron or steel (excluding cast iron or stainless steel); seamless, casing and tubing, of a kind used in drilling for oil or gas

HS code 7304.29 is the 6-digit subheading for iron or steel (excluding cast iron or stainless steel), seamless, casing and tubing, of a kind used in drilling for oil or gas. It is used for seamless oil well casing, seamless drill pipe, seamless production tubing, seamless line pipe for oil/gas and seamless conductor pipe.

What HS 7304.29 covers

This HS code covers seamless casing and tubing made of iron or steel (excluding cast iron or stainless steel) specifically designed for use in drilling for oil or gas. These products, commonly known as Oil Country Tubular Goods (OCTG), are vital components in the exploration, drilling, and production phases of hydrocarbons. Their seamless construction provides superior strength, integrity, and resistance to high pressures and corrosive downhole environments. Importers are typically oil and gas exploration companies, drilling contractors, and energy infrastructure developers. Exporters are specialized steel pipe manufacturers. Trade in these goods is highly sensitive to global energy prices, exploration activity levels, and geopolitical factors affecting the oil and gas industry.

Covers
  • Seamless oil well casing
  • Seamless drill pipe
  • Seamless production tubing
  • Seamless line pipe for oil/gas
  • Seamless conductor pipe
  • Seamless API 5CT tubing
  • Seamless riser pipes
Examples
  • Tenaris seamless OCTG
  • Vallourec seamless casing
  • JFE seamless drill pipe
  • TMK seamless production tubing
  • Sumitomo seamless pipes

Codes often confused with 7304.29

Common mistake. Often confused with 730422 (stainless steel OCTG) or 730629 (non-seamless OCTG), as the 'seamless' and 'non-stainless' characteristics are the key differentiators for this specific code.

7304.22Steel, stainless; seamless, drill pipe, of a kind used in drilling for oil or gas7306.29Iron or steel (excluding cast iron); casing and tubing of a kind used in drilling for oil and gas (other than stainless steel or seamless), n.e.c. in chapter 73

Top exporters and importers of HS code 730429, 2025

In 2025, the largest exporter of HS code 730429 in UN Comtrade data was China, with 37% of world exports; the largest importer in UN Comtrade data was Kuwait, with 16% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Top exporters 2025 · share of world exports

  1. 1 China $1.9B
  2. 2 Japan $691M
  3. 3 Brazil $446M

World total: $5.2B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Kuwait $974M
  2. 2 United States $938M
  3. 3 Canada $420M

World total: $6.2B 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 that did not report are estimated from what other countries recorded trading with them. 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 codes for 7304.29 4

Brazil splits HS 7304.29 into 4 NCM codes, Mercosur's 8-digit tariff lines.

  1. 7304.29.10 Seamless non-alloy oil or gas casing and tubingDe aço não ligado
  2. 7304.29.3 Of other alloy steel, not coatedDe outras ligas de aço não revestidos Group
  3. 7304.29.31 Uncoated alloy casing/tubing, OD up to 229 mmDe diâmetro exterior inferior ou igual a 229 mm
  4. 7304.29.39 Uncoated alloy casing/tubing, OD over 229 mmOutros
  5. 7304.29.90 Other seamless oil or gas casing and tubingOutros

All Brazil NCM codes in heading 73.04 →

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.

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 HS 7304.29

What is HS code 730429?

HS code 730429 is a 6-digit subheading in the Harmonized System that covers: Iron or steel (excluding cast iron or stainless steel); seamless, casing and tubing, of a kind used in drilling for oil or gas. This HS code covers seamless casing and tubing made of iron or steel (excluding cast iron or stainless steel) specifically designed for use in drilling for oil or gas. These products, commonly known as Oil Country Tubular Goods (OCTG), are vital components in the exploration, drilling, and production phases of hydrocarbons. Their seamless construction provides superior strength, integrity, and resistance to high pressures and corrosive downhole environments. Importers are typically oil and gas exploration companies, drilling contractors, and energy infrastructure developers. Exporters are specialized steel pipe manufacturers. Trade in these goods is highly sensitive to global energy prices, exploration activity levels, and geopolitical factors affecting the oil and gas industry.

What products fall under HS code 730429?

Seamless oil well casing, seamless drill pipe, seamless production tubing, seamless line pipe for oil/gas, seamless conductor pipe, seamless API 5CT tubing, seamless riser pipes

What are common misclassifications for HS code 730429?

Often confused with 730422 (stainless steel OCTG) or 730629 (non-seamless OCTG), as the 'seamless' and 'non-stainless' characteristics are the key differentiators for this specific code.

Which countries are the top exporters of goods under HS code 730429?

In 2025, the top exporters of HS code 730429 in UN Comtrade data were China ($1.9B, 37% of world exports), Japan ($691M) and Brazil ($446M). World exports came to about $5.2B, 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 goods under HS code 730429?

In 2025, the top importers of HS code 730429 in UN Comtrade data were Kuwait ($974M, 16% of world imports), the United States ($938M) and Canada ($420M). World imports came to about $6.2B, 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.

How is HS code 730429 structured?

HS code 730429 is a 6-digit subheading under the Harmonized System. The first 2 digits (73) identify the chapter, digits 3-4 (04) identify the heading, and digits 5-6 (29) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 730429?

Brazil splits HS code 730429 into 4 NCM codes: 7304.29.10 (Seamless non-alloy oil or gas casing and tubing), 7304.29.31 (Uncoated alloy casing/tubing, OD up to 229 mm), 7304.29.39 (Uncoated alloy casing/tubing, OD over 229 mm), 7304.29.90 (Other seamless oil or gas casing and tubing). The first 6 digits of each match the HS code.