WT20 red head, suitable for AC welding.

Tungsten needle is a tungsten product with a slender structure made of pure tungsten or tungsten alloy. Most of the models are WT20 red head. It is also suitable for AC welding, stable arc, aluminum, aluminum-magnesium alloy.

It has the characteristics of high temperature resistance and strong electrical conductivity, and is often used as an electrode in argon arc welding.