... tungsten, ceriated tungsten, lanthanatedtungsten, zirconiated tungsten pure tungsten.2) Item: WP, WT20, WC20, WZr3, WZr8, WL10, WL15, WL203) Diameter: 0.5 ... ) Quality of surface: polish annealed, or ground annealed6) Applications: TIG welding and plasma welding, cutting WC20 16x150mm For TIG Welding Ceriated Tungsten Electrode