HS Code 381090

HS code 381090 is the World Customs Organization 6-digit HS 2022 subheading for "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". The first two digits (38) are the chapter — Miscellaneous chemical products — and digits 3-4 (3810) are the heading. Countries add further digits (8-10) for their national tariff line.

Common products classified under 381090 include soldering flux, welding flux, brazing flux, welding paste, soldering auxiliary and similar items matching pickling preparations for metal surfaces. The correct code still depends on the product's material, function and intended use.

Duty is set by the destination country, not by the 6-digit HS code alone. Start from the official tariff of your market — USITC HTS (US), TARIC / Access2Markets (EU), GOV.UK Trade Tariff (UK), CBSA (Canada), ABF (Australia) or Singapore Customs — and look up the full national code with China as the country of origin.

The first 6 digits (381090) are the same worldwide under the WCO Harmonized System. Beyond that, each country extends the code (HTS in the US, TARIC in the EU, etc.) and sets its own duty and tax rates.

Treat a supplier-provided code as a clue, not a final classification. It can be incomplete, China-export-specific, or mismatched to your destination's rules. Verify against the official tariff and your product's actual material and use.