Welding electrodes, various chemical constituents of tungsten alloy rod, or upon request of electrode for annealing. Place of Origin: Henan ... electrodes, various chemical constituents of tungsten alloy rod, or upon request of electrode for annealing.Welding electrodesdia1.0x175/150mm ... ,6.4;LENGTH150,175Chemical CompositionWTh,WCe,WLa,WP,WZ,WY WT20 thoriated tungsten electrode