WELDING EQUIPMENT-NAMELY, GAS, LASER AND ELECTRIC WELDING MACHINES AND PARTS THEREOF AND CONTROLS THEREFOR, AND GAS AND LASER CUTTING MACHINES AND PARTS THEREOF AND CONTROLS THEREFOR; WELDING AND CUTTING MATERIALS AND SUPPLIES, NAMELY, SOLDERS, METALLIC POWDERS, FLUXES, WELDING WIRES, WELDING RODS, WELDING ELECTRODES, SPOT WELDING TONGS AND RESISTANCE WELDING TRANSFORMER; POWER SOURCES FOR WELDING AND CUTTING EQUIPMENT