HS code · 6-digit subheading
HS Code 7306.29 – Iron 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
HS code 7306.29 is the 6-digit subheading for iron 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. It is used for welded oil well casing, welded production tubing, welded line pipe for oil/gas, structural pipe for offshore platforms and API 5L welded pipe.
What HS 7306.29 covers
This HS code covers casing and tubing made of iron or steel (excluding cast iron), specifically used in drilling for oil and gas, but importantly, these are *not* seamless and *not* of stainless steel. These products are typically welded pipes, offering a cost-effective alternative to seamless pipes for certain applications within the oil and gas industry, particularly where extreme pressures or highly corrosive environments are less critical. Importers include oilfield service companies, pipeline construction firms, and energy project developers. Exporters are large steel pipe manufacturers. Trade volumes are influenced by global energy demand, the scale of new oil and gas exploration projects, and the ongoing maintenance of existing energy infrastructure.
- Covers
- Welded oil well casing
- Welded production tubing
- Welded line pipe for oil/gas
- Structural pipe for offshore platforms
- API 5L welded pipe
- ERW (Electric Resistance Welded) casing
- Spiral welded pipes
- Examples
- EVRAZ welded OCTG
- Tenaris welded casing
- JFE welded line pipe
- TMK welded production tubing
- Welspun welded pipes
Codes often confused with 7306.29
Common mistake. Often confused with 730429 (seamless OCTG) or 730621 (stainless steel OCTG), as the 'non-seamless' (welded) and 'non-stainless' characteristics are the key differentiators for this code.
Top exporters and importers of HS code 730629, 2025
In 2025, the largest exporter of HS code 730629 in UN Comtrade data was South Korea, with 30% of world exports; the largest importer in UN Comtrade data was the United States, with 76% 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 South Korea $413M 30% of world exports
- 2 United States $232M 17% of world exports
- 3 Taiwan* ~$219M 16% of world exports · partner records ↗
World total: $1.4B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $1.2B 76% of world imports
- 2 Canada $241M 16% of world imports
- 3 United Arab Emirates* ~$22M 1.4% of world imports · partner records ↗
World total: $1.5B 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. UN Comtrade records Taiwan as "Other Asia, not elsewhere specified". Saudi Arabia's exports under that code are left out: they are far too large to be trade with Taiwan, so mostly undisclosed partners. 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 7306.29
Brazil does not split HS 7306.29: its NCM code is 7306.29.00.
All Brazil NCM codes in heading 73.06 →
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 7306.29
What is HS code 730629?
HS code 730629 is a 6-digit subheading in the Harmonized System that covers: Iron 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. This HS code covers casing and tubing made of iron or steel (excluding cast iron), specifically used in drilling for oil and gas, but importantly, these are *not* seamless and *not* of stainless steel. These products are typically welded pipes, offering a cost-effective alternative to seamless pipes for certain applications within the oil and gas industry, particularly where extreme pressures or highly corrosive environments are less critical. Importers include oilfield service companies, pipeline construction firms, and energy project developers. Exporters are large steel pipe manufacturers. Trade volumes are influenced by global energy demand, the scale of new oil and gas exploration projects, and the ongoing maintenance of existing energy infrastructure.
What products fall under HS code 730629?
Welded oil well casing, welded production tubing, welded line pipe for oil/gas, structural pipe for offshore platforms, API 5L welded pipe, ERW (Electric Resistance Welded) casing, spiral welded pipes
What are common misclassifications for HS code 730629?
Often confused with 730429 (seamless OCTG) or 730621 (stainless steel OCTG), as the 'non-seamless' (welded) and 'non-stainless' characteristics are the key differentiators for this code.
Which countries are the top exporters of goods under HS code 730629?
In 2025, the top exporters of HS code 730629 in UN Comtrade data were South Korea ($413M, 30% of world exports), the United States ($232M) and Taiwan (about $219M). World exports came to about $1.4B, 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 730629?
In 2025, the top importers of HS code 730629 in UN Comtrade data were the United States ($1.2B, 76% of world imports), Canada ($241M) and the United Arab Emirates (about $22M). World imports came to about $1.5B, 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 730629 structured?
HS code 730629 is a 6-digit subheading under the Harmonized System. The first 2 digits (73) identify the chapter, digits 3-4 (06) 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 730629?
In Brazil, HS code 730629 is NCM 7306.29.00. The last two digits are 00 because Brazil does not split this HS code further.