Due to the properties of tungsten needle, they can be manufactured to be used in some fields to have a good performance of tungsten.
The diameter of some tungsten needles is similar to tungsten electrodes. Or we can understand it as when the tungsten electrode is thick enough, the products can be called tungsten needle. And when the tungsten wire is bold enough, the products can be called tungsten needle after cutting into a set length.
Therefore, tungsten needle has some similar applications as tungsten electrodes and tungsten wire.
Tungsten needles can be made needles of flash lamp in camera, needles of sodium lamps and needles of halogen lamps and metal halide lamps. They also can be applied to welding. Another important application of tungsten needle is to be used as material to purify the air.