Tantalum and tantalum alloy (Ta-2.5W,Ta-10W,Ta-40Nb) tube have high melting point and good corrosion resistance and cold-workability, so they are extensively applied to chemical, High-temperature technology and atomic energy industry. Tantalum and Tantalum alloy tube are mainly used for manufacturing reactor, heat exchanger, tube, bayonet, condenser, screw coil, electric thermocouple and its protector tube, U-shaped tube, reactor and tube for liquid metal.