Pure tungsten electrode 
Suitable for welding under AC mainly using when welding alunimum and alunimum-alloy. 
Retains a ball end when welding, which esults in less tungsten permeation and good corrosion resistance
| 
					Model
				 | 
					Added impurity
				 | 
					Impurity quantity%
				 | 
					Other impurities
				 | 
					Tungsten %
				 | 
					Electric discharged power
				 | 
					Color
				 | 
| 
					WP
				 |  |  | 
					<0.20
				 | 
					The rest
				 | 
					4.5
				 | 
					Green
				 | 
