Tungsten heavy alloy is usually consisted of W-Ni- Fe or W-Ni- Cu or even W-Ni-Cu-Fe, some tungsten alloy is added Co¡¢Mo¡¢Cr, etc. It could be made as many shapes. Tungsten heavy alloy tubes is usually used in making radiation shielding, some parts for military defence, such counterweights for hunting guns, hunting equipment, the missile weapons, armor piercing ammunitio, counterweights for oil logging, etc.