HS code · 6-digit subheading
HS Code 8402.90 – Boilers; parts of steam or other vapour generating boilers
HS code 8402.90 is the 6-digit subheading for boilers, parts of steam or other vapour generating boilers. It is used for boiler tubes, boiler drums, superheater coils, economizer sections and water walls.
What HS 8402.90 covers
This category encompasses all parts of steam or other vapor generating boilers classified under heading 8402. This includes a vast array of components essential for the manufacture, assembly, maintenance, and repair of industrial and utility boilers. The trade in these parts is critical for supporting the global installed base of boilers, ensuring their continuous and efficient operation across power generation, heavy industry, and various commercial applications. It involves a wide range of specialized components, from pressure-bearing parts like tubes and drums to control systems, safety devices, and burner assemblies. Importers are typically boiler manufacturers, power plant operators, industrial facilities, and maintenance service providers. Exporters are often specialized component manufacturers or the boiler OEMs themselves, supplying a global aftermarket.
- Covers
- Boiler tubes
- Boiler drums
- Superheater coils
- Economizer sections
- Water walls
- Headers
- Burner assemblies for boilers
- Safety valves for boilers
- Boiler control panels
- Soot blowers
- Grates for solid fuel boilers
- Examples
- Valmet boiler parts
- Babcock & Wilcox replacement parts
- Siemens Energy boiler components
- Alfa Laval heat exchanger parts (for boilers)
Codes often confused with 8402.90
Common mistake. Can be confused with general parts of machinery (847990) or parts of central heating boilers (840390), but this code is specifically for parts of *steam or vapor generating* boilers of heading 8402.
Top exporters and importers of HS code 840290, 2025
In 2025, the largest exporter of HS code 840290 in UN Comtrade data was China, with 40% of world exports; the largest importer in UN Comtrade data was Saudi Arabia, with 21% 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 China $933M 40% of world exports
- 2 South Korea $296M 13% of world exports
- 3 Italy $106M 4.5% of world exports
World total: $2.3B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Saudi Arabia $429M 21% of world imports
- 2 United States $145M 7.2% of world imports
- 3 Indonesia $85M 4.2% of world imports
World total: $2.0B 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 code for 8402.90
Brazil does not split HS 8402.90: its NCM code is 8402.90.00.
All Brazil NCM codes in heading 84.02 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 8402.90
What is HS code 840290?
HS code 840290 is a 6-digit subheading in the Harmonized System that covers: Boilers; parts of steam or other vapour generating boilers. This category encompasses all parts of steam or other vapor generating boilers classified under heading 8402. This includes a vast array of components essential for the manufacture, assembly, maintenance, and repair of industrial and utility boilers. The trade in these parts is critical for supporting the global installed base of boilers, ensuring their continuous and efficient operation across power generation, heavy industry, and various commercial applications. It involves a wide range of specialized components, from pressure-bearing parts like tubes and drums to control systems, safety devices, and burner assemblies. Importers are typically boiler manufacturers, power plant operators, industrial facilities, and maintenance service providers. Exporters are often specialized component manufacturers or the boiler OEMs themselves, supplying a global aftermarket.
What products fall under HS code 840290?
Boiler tubes, boiler drums, superheater coils, economizer sections, water walls, headers, burner assemblies for boilers, safety valves for boilers, boiler control panels, soot blowers, grates for solid fuel boilers
What are common misclassifications for HS code 840290?
Can be confused with general parts of machinery (847990) or parts of central heating boilers (840390), but this code is specifically for parts of *steam or vapor generating* boilers of heading 8402.
Which countries are the top exporters of goods under HS code 840290?
In 2025, the top exporters of HS code 840290 in UN Comtrade data were China ($933M, 40% of world exports), South Korea ($296M) and Italy ($106M). World exports came to about $2.3B, 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.
Which countries are the top importers of goods under HS code 840290?
In 2025, the top importers of HS code 840290 in UN Comtrade data were Saudi Arabia ($429M, 21% of world imports), the United States ($145M) and Indonesia ($85M). World imports came to about $2.0B, 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 840290 structured?
HS code 840290 is a 6-digit subheading under the Harmonized System. The first 2 digits (84) identify the chapter, digits 3-4 (02) identify the heading, and digits 5-6 (90) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 840290?
In Brazil, HS code 840290 is NCM 8402.90.00. The last two digits are 00 because Brazil does not split this HS code further.