Types of Cleaned Tungsten Wire

Cleaned tungsten wire types:
| Type | Purity of tungsten | Type | Application |
| WAl1 | ≥99.92 | T | Double – screwy filament. Filament for high color temperature lamp and shockproof lamp etc. |
| L | Filament for incandescent lamp. Cathode for emitting tube. High temperature electrodes. Twisted tungsten wire etc. | ||
| W | Folded – heater for electronic tube, etc. | ||
| WAl2 | ≥99.92 | T | Filament for fluorescent lamp etc. |
| L | Heater for electronic tube. Filament for incandescent lamp. Twisted tungsten wire etc. | ||
| W | Folded – heater for electronic tube, etc. | ||
| WAl3 | ≥99.92 | L | Filament for normal lamp. Spring wire for semiconductors, etc. |
| W1 | ≥99.95 | Tungsten wire in twisted and heating parts etc. | |
| W2 | ≥99.92 | Grid side rod for electron tube. Tungsten wire in twisted etc. |




