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HS Code 3810Metal-pickling preparations; fluxes etc for soldering, brazing; welding powders, pastes of metal and other materials; preparations used as cores or coatings for welding electrodes or rods

2 six-digit codes · Heading 10 of 27 in Chapter 38 · World Customs Organization Harmonized System

HS code 3810 covers products that clean metal, help join metal and coat welding rods. You may also see it called HSN code 3810, which is the same heading number.

Heading 3810 splits exactly two ways. Goods answering to “Metal-pickling preparations; fluxes etc for soldering, brazing; welding powders, pastes of metal and other materials; preparations used as cores or coatings for welding electrodes or rods” classify either at 381010 or at 381090, and the wording in the table below is the whole of what separates them. The heading is number 10 of 27 in Chapter 38, Chemical products n.e.c., which runs to 108 six-digit codes in all.

Six-digit codes under heading 3810

HS CodeImport–export description
381010Pickling preparations for metal surfaces; soldering, brazing or welding powders and pastes consisting of metal and other materials
381090Fluxes and other auxiliary preparations; for soldering, brazing or welding, or preparations used as cores or coatings for welding electrodes or rods

What HS code 3810 covers

Think of a metal workshop. Before parts are joined, the surface often has to be cleaned. During joining, a flux or paste helps the joint form. Heading 3810 is where many of these helper products are classified.

The goods are not the metal itself. They are the preparations used around soldering, brazing and welding work. Chapter 38 is the home for chemical products not named elsewhere.

  • Metal pickling solutions that clean or etch metal surfaces
  • Soldering and brazing fluxes
  • Welding powders and pastes that blend metal with other materials, such as solder paste
  • Mixtures used as cores or coatings for welding electrodes or rods

How to choose between 381010 and 381090

Start with what the product does. A pickling bath for metal surfaces goes to 381010. So does a powder or paste for soldering, brazing or welding that is built from metal plus other materials.

Now look at helpers. A flux, any other auxiliary preparation for these jobs, and the core or coating of a welding electrode go to 381090.

Here is a simple test. Does the product carry metal and act as the joining powder or paste itself? That points to 381010. Is it a helper added to the process, or part of the rod? That points to 381090.

If you are still unsure, run your product description through the HS code classifier before you file.

HS code for soldering flux, brazing flux paste and welding powder

Here is a quick lookup for common goods. Match your product to the closest line, then check the wording of the six-digit code.

  • Soldering flux: 381090
  • Brazing flux, including flux sold as a paste: 381090
  • Solder paste with metal in it: 381010
  • Welding powder with metal in it: 381010
  • Coating or core for a welding electrode: 381090
  • Metal pickling solution: 381010

Nearby headings that are easy to confuse

Some products look close to 3810 but sit elsewhere. Heading 3811 covers anti-corrosive preparations and additives for mineral oils and similar liquids. It is for fuels and oils, not for metal joining.

Heading 3809 covers finishing agents for textile, paper and leather work. Heading 3824 is a catch-all for chemical preparations named nowhere else. Check 3810 first and use 3824 only when nothing more specific fits.

HS 3810 import and export data

EximDataX shows shipment-level import and export records from official customs sources. Coverage: 43 direct customs feeds plus 184 mirror-derived countries.

Named buyers and named suppliers are available in 38 of the 43 direct markets. Most markets refresh weekly and some refresh daily.

You can search by HS code to see who imports and exports a product, and book a free demo.

Who ships under 3810?

EximDataX tracks the live import–export records filed under this heading and the 2 codes beneath it: named buyers, suppliers, quantities and values from official customs feeds.

See live data for 3810

Section VI: Products of the Chemical or Allied Industries, chapters 28–38.

Straight answers

HS Code 3810: common questions

What products come under HS code 3810?

Helper products for joining and treating metal. These include cleaning baths, fluxes, soldering and welding pastes, and electrode coatings.

What is the difference between HS 381010 and 381090?

381010 is for pickling baths and for powders or pastes that contain metal.

What is the HS code for soldering or brazing flux?

Look at 381090.

Which HS code covers metal pickling preparations?

Use 381010. Its wording names pickling preparations for metal surfaces.

Is HSN code 3810 the same as HS code 3810?

Yes. HSN is another name people use for the same heading number.

Where can I find importers and exporters under HS 3810?

Open the import data, export data, buyer data and supplier data pages linked here. They lead to the live records for this heading.

See what your buyers are buying.Then decide.

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