Wolfraam draad

Type

Purity of tungsten

Application

WAl1

≥99.92

Double – screwy filament. Filament for high colour temperature lamp and shockproof lamp etc.

Filament for incandescent lamp. Cathode for emitting tube. High temperature electrodes. Twisted tungsten wire etc.

Folded – heater for electronic tube, etc.

WAl2

≥99.92

Filament for fluorescent lamp etc.

Heater for electronic tube. Filament for incandescent lamp. Twisted tungsten wire etc.

Folded – heater for electronic tube, etc.

WAl3

≥99.92

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.