Pipe making machine,Pipe machine,High frequency tube mill High-frequency welded steel tube mill, O.D. from 4.76mm to 273mm Pipe making machine,Pipe machine,High frequency tube millFeatures:1) Working capacity: 4.76mm-273mm2) High productivity and easy to operateHigh-frequency steel tube mill, used to produce welded mild carbon steel tubes, the outside diameter range of the steel tube within ...