Tungsten filament is widely used as filament for all kinds of lamps.
Tungsten filament is mostly used for making various incandescent and halogen tungsten lamp filament and gas discharge lamp electrode, in addition small amounts of tungsten used for heating material in high temperature furnace, electron tube heater and composite stiffener.

Tungsten-aluminum alloy filament is usually used as filament for high colour temperature lamp and shockproof lamp. Tungsten-aluminum alloy filament is also used as filament for incandescent lamp, high temperature electrodes, tungsten wire in twisted, etc.
Tungsten filament bulb, tungsten filament lamp and tungsten light bulb all use tungsten filament.

Tungsten filament is featured by high melting point, low vapor pressure. So tungsten filament is suitable to be used in lighting manufacturing. The surface of tungsten filament is smooth and free from any other defects affecting the further uses. The tungsten filament can be easily unwinded. The crystal structure of tungsten filament is compact.
Sanhui Company is refractory metal manufacturer and we also provide molybdenum products, titanium products, nickel products and other metal products.

Type	Purity of tungsten		tungsten wire applications
WAL1	>=99.92%	T	double-screwy filament.filament for hihg colour temperature lamp and shockproof lamp,etc.
		L	filament for incandescent lamp.cathode for emitting tube.high temperature electrodes.tungsten wire in twisted.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.tungsten wire in twisted,etc
		W	folded-heater,grid and cathode for electronic tube,etc.
WAL3	>=99.92%	L	filament for normal lamp.spring wire for semicondutor,etc.
W1	>=99.95%		tungsten wire in twisted and heating parts,etc.
W2	>=99.92%		grid siderod for electron tube.tungsten wire in twisted,etc.