In order to provide customers with more perfect service, global machinery leading to the German Co ordered a series of special specifications of the deep hole drilling (gun drill). This series of deep-hole drilling (gun drilling) specifically for the global production of machinery designed for deep hole drilling machine. Deep hole drilling (gun drilling) in diameter from 3mm ~ 30mm, length of drill pipe is different from 250mm ~ 1950mm, drilling can meet the needs of different users. In the deep-hole processing can achieve more complete results.