Chemical Preparations Used in Brazing, Soldering, or Heat Treating Metals-Namely, Filling and Heat Treating Substances for Metallic Articles; Powder, Filler, and Flux for Rods, Plates, and Strips, Hardening and Cleansing Substances; Fluxes in Solid or in Powder Form, Paste or Liquid Form for Treating Metals by Brazing, Soldering, or Welding

Metallic Welding, Brazing, and Soldering Alloys in the Form of Electrodes and Rods Coated with or Having Incorporated Therein Flux Substance; Non-Tacky Cementing Material in the Nature of a Solder, Spelter, for Welding, Brazing, and Soldering Purposes