… coated or cored with flux material, of a kind used for soldering, brazing, welding or deposition of metal or of metal carbides; wire …
Explanatory notes
… coated or cored with flux material, of a kind used for soldering, brazing, welding or deposition of metal or of metal carbides; wire … ammonium chloride, borax, quartz, resin or lanolin) which would otherwise have to be added separately during the …