1.Model: WP,WT10,WT20,WT30,WT40,WZr3,WZr8,WL10, WL15, WL20, ... ... Tungsten ElectrodeThoriated tungsten electrode is the most widely used welding material.Characteristic: Thoriated tungsten electrode is the most widely used welding material. 2% Thoriated ... of the Tungsten rod. 2% Tungsten electrode provides excellent resistance from weld pool contamination and offers the welder easier arc starting ...