HSN code 3810 — PICKLING PREPARATIONS FOR METAL SURFACES, FLUXES AND OTHER A

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

This code covers chemical preparations used to prepare metal surfaces before joining operations, including pickling acids and fluxes for soldering, brazing and welding. It also includes welding powders, pastes, and materials used as coatings or cores for welding electrodes and rods.