... 2.Range length of bottle:600-2000mm 3.Thread:Normal straight thread High pressure gas cylinder bottle mouth threading ... excircle,Chamfering outside angle,turning surface,turning inner hole,chamfering inner angle,milling inner thread.All above using numerical programming ,Using stepper ... ) Range length of bottle:600-2000mm(3) Thread:Normal straight thread and tapper thread3.Working time:180s/pc( case ...