Tungsten alloy swaging rod is made of tungsten alloy rod through calcinations. The normal method used in the processing are extruding, forging and sintering. After calcinations, tungsten alloy swaging rod has higher ductility, toughness and tensile strength than tungsten alloy rod, so it can be used for a longer time. Tungsten alloy swaging rod is widely used in industry as well as military areas, such as rifle bullet, armor piercing, snipe rifle penetrator, etc. Tungsten alloy swaging rod is used for SPYDER.
The SPYDER (Surface-to-air PYthon and DERby) is an advanced anti-aircraft missile system developed by the Israeli company Rafael Advanced Defense Systems, which is fitted atop a Czech Tatra truck. It implements surface-to-air versions of the Python-5 and Derby missiles of the same company.