tungsten ring and tungsten alloy ring 1. tungsten alloy ring component: the main component is tungsten, and the tungsten ring including other elements as nickel and iron. 2. id: 3mm to id: 300mm, thickness: minimum 1mm, length: minimum 3mm 3. the tungsten ring is with high purity, and it produced with powder metallurgical method 4. applications range: the tungsten alloy ring can widely use during the industry fields. tungsten axes and tungsten alloy axes 1. tungsten axes component: wu-ni-cu (the main component tungsten including: 85% to 99%) 2. tungsten axes performance: large proportion, high intensity, strong absorption ability, big thermal conductivity, small thermal-expansion coefficient, good electric conductivity, good weld ability and workability, 3. applications range: the tungsten axes can be widely utilized in astronautics, aviation, military, petroleum well drilling, electric appliance measuring appliance, medicine, etc.