Product classification
HS code for Asphalt flux: 2713.90
Residues, of petroleum oils or of oils obtained from bituminous minerals.
Classification of asphalt flux under HS 2713.90
Asphalt flux, also known as flux oil, is classified under HS code 2713.90, which serves as the residual category for "Other residues of petroleum oils or of oils obtained from bituminous minerals." Flux oil is a heavy petroleum distillate or residue used to reduce the viscosity of harder bitumens to make them workable for specific industrial applications, such as the production of roofing shingles or road surfacing materials. Unlike pure petroleum bitumen (2713.20) or petroleum coke (2713.11), flux is a liquid or semi-solid residue that does not meet the specific physical characteristics or commercial definitions of the other subheadings under heading 2713. The classification depends on the product being a byproduct of petroleum refining that is not intended for use as a primary fuel or lubricant, but rather as a processing aid or raw material in the bituminous products industry. In the refining process, flux oils are often the heavy fractions that remain after vacuum distillation. They are characterized by their high boiling points and aromatic or naphthenic content. Because they are residues rather than finished oils, they are placed in 2713.90. This code is essential for tracking the trade of refinery byproducts that are used to modify the physical properties of asphalt and other heavy hydrocarbons.
- Covers
- Petroleum flux oil
- Heavy aromatic residues
- Bitumen softeners (petroleum based)
- Refinery residues for roofing flux
- Extracts from lubricating oil refining
- Also under 2713.90
- ExxonMobil Heavy Fuel Oil
- Shell Residue Fuel
- Valero Refinery Residues
- Sinopec Heavy Oil
Codes often confused with 2713.90
Common mistake. Asphalt flux is sometimes misclassified under 2710.19, which covers heavy oils and lubricating oils. However, flux is a residue of the refining process rather than a finished lubricating oil or a specific fuel fraction. Another common error is using 2713.20 (Petroleum bitumen). While flux is related to bitumen, it is generally a lighter, more liquid residue used to "flux" or soften the bitumen, and thus falls into the "Other residues" category of 2713.90.
Top exporters and importers of HS 271390 (the code used for asphalt flux), 2025
In 2025, the largest exporter of HS 271390 (the code used for asphalt flux) in UN Comtrade data was Nigeria, with 47% of world exports; the largest importer in UN Comtrade data was the United Arab Emirates, with about 43% 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 271390, not only asphalt flux.
Top exporters 2025 · share of world exports
- 1 Nigeria $805M 47% of world exports
- 2 Indonesia $605M 35% of world exports
- 3 Malaysia $110M 6.5% of world exports
World total: $1.7B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United Arab Emirates* ~$241M 43% of world imports · partner records ↗
- 2 Kazakhstan $79M 14% of world imports
- 3 Italy $64M 12% of world imports
World total: $556M 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 asphalt flux
Brazil classifies asphalt flux under NCM 2713.90.00: HS 2713.90 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about asphalt flux
What is the HS code for Asphalt flux?
The HS code for Asphalt flux is 271390 (Residues; of petroleum oils or of oils obtained from bituminous minerals). Asphalt flux is classified under HS code 2713.90 as an "other" petroleum residue.
How do I classify Asphalt flux for customs?
Asphalt flux is classified under HS code 271390 — Residues; of petroleum oils or of oils obtained from bituminous minerals. This is a 6-digit subheading level code.
Is flux oil the same as lubricating oil?
No, flux oil is a refinery residue used to soften bitumen, whereas lubricating oils are finished products classified under heading 2710.
Which countries are the top exporters of asphalt flux (HS 271390)?
In 2025, the top exporters of HS 271390 (the code used for asphalt flux) in UN Comtrade data were Nigeria ($805M, 47% of world exports), Indonesia ($605M) and Malaysia ($110M). World exports came to about $1.7B, 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 asphalt flux (HS 271390)?
In 2025, the top importers of HS 271390 (the code used for asphalt flux) in UN Comtrade data were the United Arab Emirates (about $241M, 43% of world imports), Kazakhstan ($79M) and Italy ($64M). World imports came to about $556M, 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 Asphalt flux the same in all countries?
The base HS code 271390 for Asphalt flux 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 asphalt flux in Brazil?
In Brazil, asphalt flux (HS 271390) is classified under NCM 2713.90.00.