Tungsten alloy filament is used as filament,cathode for emitting tube,high temperature electrodes,specification are supplier Tungsten alloy filament is mainly used as filament,cathode for emitting tube,high temperature electrodes,Tungsten wire in twisted,folded-heater for electronic tube,grid,gridsiderod for electron tube.The type contain WAL1,WAL2,WAL3,W1 ,W2.