... condition of AC. 2. tig welding rod. 3.good qualityzirconiated tungsten electrode 1. it is excellent for AC welding due to ... ; 150mm, 175mm4. quality of surface: ground finish, polish finish Zirconium- Tungsten Electrode boasts a fine performance in welding under the condition ... in the case of high load of current ,the Zirconium- Tungsten excellent performance is far better than that of other electrodes ...