Welding and joining materials, namely, metal welding rods, welding wire, and common metal alloys in the nature of brazing alloys, welding alloys, powdered alloys and soldering alloys; welding wires and metal welding rods for hardfacing and hardbanding; welding wires used for the application of weld material on a surface of pipes, tubing and tools; welding wires and metal welding rods used for the application of weld material on a surface of tool joints, drill collars, down hole tools, downhol...