Code 3810 90 · Heading 3810

Preparations for filling or coating welding electrodes or wire, and soldering or welding fluxes and other aids — excluding metal powders or pastes and flux-filled base-metal electrodes

This covers preparations used to fill or coat welding electrodes or welding wire, as well as fluxes and other aids for soldering or welding. It does not cover powders or pastes made of metal and other substances, or base-metal or metal-carbide electrodes coated or filled with flux.

For example

Preparation for filling welding electrodes
Preparation for coating welding wire
Soldering flux
Welding flux

See the official tariff text

Official tariff text

Fluxes and other auxiliary preparations for soldering, brazing or welding; preparations of a kind used as cores or coatings for welding electrodes or rods (excl. soldering, brazing or welding powders and pastes consisting of metal and other materials, and welding electrodes or rods of base metals or metal carbides coated with fluxes)

How we got to this code

VI
38
3810
3810 90

Show the steps

The path to this code

Every code is reached through these choices, one level at a time.

Step 4 of 4

Step 1 · Section VI Products of the chemical or allied industries
Is it an inorganic or organic chemical; a pharmaceutical product; a fertilizer; a tanning or dye extract, pigment, paint, varnish, filler or printing ink; an essential oil, perfume, cosmetic or toilet product; soap, a surface-active, washing, cleaning, polishing or wax product; a protein, modified starch, glue or enzyme; an explosive, pyrotechnic article, match or other specified combustible material; a photographic or cinematographic product; or another chemical product?
✓
Step 2 · Chapter 38 Miscellaneous chemical products 11 of 11 chapters in section VI
Which specific product type is it: a carbon or mineral product, resin or terpentine product, pesticide, textile, paper or leather treatment, soldering or welding preparation, oil or fuel additive, rubber or plastic additive, fire-extinguishing preparation, solvent or paint remover, catalyst, refractory product, alkylbenzene or alkylnaphthalene mixture, doped electronic material, hydraulic fluid, antifreeze or de-icing liquid, culture substrate, diagnostic or laboratory reagent, fatty acid or fatty alcohol, foundry binder or other chemical preparation, chemical waste, biodiesel, or a mixture containing halogenated methane, ethane or propane derivatives?
✓
Step 3 · Heading 3810 Pickling preparations for metal surfaces; fluxes an… 10 of 27 headings under chapter 38
Is it a metal pickling preparation, or soldering or welding powder or paste consisting of metal and other substances; or is it a preparation for filling or coating welding electrodes or wire, or a flux or other aid for soldering or welding?
✓
Step 4 · Subheading 3810 90 Fluxes and other auxiliary preparations for solderi… 2 of 2 subheadings under heading 3810
Is it a preparation used to fill or coat welding electrodes or welding wire?

Pick the 8-digit code

Pick the description that best matches your product.

Import duty on the codes below: 4.1–5.0%

2 codes below this one

Compare the sibling codes

See all 2 codes at this level

Classification decides the rate here: from 4.1% to 6.5%.

3810 10 Pickling preparations for metal surfaces; soldering, brazing or welding pastes and powders consisting of metal and other materials 6.5%
3810 90 Fluxes and other auxiliary preparations for soldering, brazing or welding; preparations of a kind used as cores or coatings for welding electrodes or rods (excl. soldering, brazing or welding powders and pastes consisting of metal and other materials, and welding electrodes or rods of base metals or metal carbides coated with fluxes) you are here 4.1–5.0%

Selling to Norway, Great Britain and the United States

What they charge on arrival.

Norway, Great Britain and the United States use their own tariff lines under the 6-digit HS code. The rates below are what their customs charge on goods arriving from the EU. Match the goods against each country's own wording before you rely on a rate.

Norway

Duty free

Their lines1 Norwegian line

38.10.9000 Other

Norwegian tariff data checked Sept. 13, 2026.

Great Britain

Duty free

Their lines2 British lines

3810 90 10 00 Preparations of a kind used as cores or coatings for welding electrodes and rods

Northern Ireland follows other rules.

UK tariff data checked Sept. 13, 2026.

United States

10.0%

Estimated from published US measures

Their lines3 US lines
Entry dateSept. 17, 2026

3810.90.10.00 Pickling preparations for metal surfaces; fluxes and other auxiliary preparations

The US importer of record files the entry.

US tariff data checked Sept. 16, 2026.

See the 1 Norwegian line

Selling to Norway

Norway splits the 6-digit category its own way, so these are Norway's own lines under it, not this EU code. Check your product against their wording; what Norwegian customs charges is shown per line.

38.10.9000

Other

Ordinary duty

Duty free

Norwegian tariff data version 1.5/1.2, last checked Sept. 13, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

See the 2 British lines

Selling to Great Britain

What UK customs charges when goods like these arrive in Great Britain.

All 2 UK lines under this code

They all have the same duty rates shown here.

Ordinary duty

Duty free

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1599, last checked Sept. 13, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

See the 3 US lines

Selling to the United States

What US customs charges when goods like these arrive from the EU. The US importer of record files the entry and pays the duty.

3810.90.10.00

Pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods, Other, Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances

General rate

6.5%

From the EU

10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99
3810.90.20.00

Pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods, Other, Consisting wholly of inorganic substances

General rate

Free

From the EU

10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99
3810.90.50.00

Pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods, Other

General rate

5%

From the EU

10.0% Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99

Worked out for an entry on Sept. 17, 2026.

US tariff schedule 2026HTSRev19, last checked Sept. 16, 2026.

Last change we recorded: Revision 19 (2026), Sept. 16, 2026.

Anti-dumping and countervailing duties, US import taxes and customs fees are not included.

The descriptions above are the US tariff texts, which the United States publishes in English only.

Source: the US International Trade Commission's Harmonized Tariff Schedule (hts.usitc.gov), public domain, and the measures published in the Federal Register.

This is a planning estimate from the US Harmonized Tariff Schedule (revision shown) and the published Federal Register measures as of the date shown, for a shipment of EU origin. It is not a customs entry, legal advice or a broker's opinion, and tariffs.help is not a US-licensed customs broker. The US importer of record or their broker confirms the classification, origin, value and the duty due before filing.

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with Toldstyrelsen, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.