Product classification
HS code for Tube mill: 8455.10
Metal-rolling mills, tube mills.
Classification of tube mill under HS 8455.10
A tube mill is classified under HS code 8455.10 because it functions as a metal-rolling mill specifically designed for the production of tubes. Heading 8455 encompasses machines that shape metal by passing it between rotating rollers to reduce thickness or create specific profiles. Unlike bending machines that manipulate pre-existing tubes, a tube mill is a complex industrial system that typically takes flat-rolled metal (skelp) and transforms it into a tubular shape through a continuous rolling process. Subheading 8455.10 is the specific international designation for mills dedicated to tube manufacturing. This classification applies regardless of whether the mill produces seamless or welded tubes, provided the primary shaping mechanism is rolling. The machinery included under this code often involves heavy-duty stands, rollers, and drive systems designed to handle high-stress metal deformation. It is important to note that while a tube mill line may include welding or cutting components, the rolling mill itself is the defining characteristic for this HS code.
- Covers
- Seamless tube rolling mills
- Welded pipe production mills
- Cold rolling mills for steel tubes
- Hot rolling mills for non-ferrous tubes
- Mandrel mills for tube production
- Also under 8455.10
- SMS Group hot strip mill
- Danieli cold rolling mill
- Primetals Technologies tube mill
- Fives plate mill
Codes often confused with 8455.10
Common mistake. Tube mills are often misclassified under 8462.29 (bending/forming machines) or 8462.39 (shearing machines) because they involve shaping metal. However, because the shaping is achieved through rolling, 8455 is the legally correct heading. Another common error is using 8455.21 or 8455.22, which are reserved for hot or cold rolling mills for products other than tubes, such as sheets or bars.
Top exporters and importers of HS 845510 (the code used for tube mill), 2025
In 2025, the largest exporter of HS 845510 (the code used for tube mill) in UN Comtrade data was China, with 49% of world exports; the largest importer in UN Comtrade data was the United States, with 35% 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 845510, not only tube mill.
Top exporters 2025 · share of world exports
- 1 China $119M 49% of world exports
- 2 Italy $30M 12% of world exports
- 3 Germany $20M 8.2% of world exports
World total: $244M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $99M 35% of world imports
- 2 India $59M 21% of world imports
- 3 Saudi Arabia $17M 6.2% of world imports
World total: $280M 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 tube mill
Brazil classifies tube mill under NCM 8455.10.00: HS 8455.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about tube mill
What is the HS code for Tube mill?
The HS code for Tube mill is 845510 (Metal-rolling mills; tube mills). The HS code for a metal-rolling tube mill is 8455.10.
How do I classify Tube mill for customs?
Tube mill is classified under HS code 845510 — Metal-rolling mills; tube mills. This is a 6-digit subheading level code.
Does 8455.10 include the welding unit of a pipe line?
While often part of the same line, the welding unit is technically classified under 8515; however, if the entire line is imported as a functional unit, it may be classified under 8455.10 depending on the primary function.
Which countries are the top exporters of tube mill (HS 845510)?
In 2025, the top exporters of HS 845510 (the code used for tube mill) in UN Comtrade data were China ($119M, 49% of world exports), Italy ($30M) and Germany ($20M). World exports came to about $244M, 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 tube mill (HS 845510)?
In 2025, the top importers of HS 845510 (the code used for tube mill) in UN Comtrade data were the United States ($99M, 35% of world imports), India ($59M) and Saudi Arabia ($17M). World imports came to about $280M, 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 Tube mill the same in all countries?
The base HS code 845510 for Tube mill 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 tube mill in Brazil?
In Brazil, tube mill (HS 845510) is classified under NCM 8455.10.00.