... ,support wire,lead-in wire,printer pin,various electrodes. Tungsten rod(tungsten bar,tugnsten electrode) is for the application of emission cathode, high ... making cathodes, high temperature setting rods, electrodes2) Leads, supports and typing needles3) Electrode of WTh20, WCe20, Pure tungsten for TIG welding Tungsten Rod, tungsten bar,Tungsten Electrode