high quality and hardness superfine good performance spraying excelent abrasion resistance low proce tungsten bar

Due to its specialities of high hardness, excelent abrasion resistance and good performance at high temperatures after quenching and tempering, tungsten bar is used to make tungsten rod, tungsten electrode, filament, electrical contact, heating conductor, crankshaft and cylinder tungsten wire drum, heat-resistant steel additives, etc. Filament and electron tube filament produced by doped tungsten bars has better performance,and widely used in guns, artillery, rockets, satellites, aircraft, ship.