8311: Wire/rod, etc of base met/met carbide for solderg/weld of metal carbi

831110: Electrodes, coated, of base metal, for electric arc welding 831120: Wire, cored, of base metal, for electric arc welding 831130: Coatd rods & cord wire of base metal f soldering, brazing/weldg by fl 831190: Electrodes & sim prod of base met/metal carbd, nes, for welding, braz 8311: Wire/rod, etc of base met/met carbide for solderg/weld of metal carbi