… and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other … preparations of a kind used as cores or coatings for welding electrodes or rods. …
Explanatory notes
… and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes … etc. Pi ckling preparations are usually based on dilute acids (hydrochloric, sulphuric, hydrofluoric , … solder itself from oxidation. They have the property of dissolving the oxide which forms during the operation. Zinc …