1.High Frequency Aluminium Pipe making machine 2.Diameter :16-32mm 3 ... .Wall Thickness : 0.28 0.32 4.Speed: 30-100M/min 5.CE High ... Frequency Aluminium Pipe making machineDevice principle: high-frequency welding steel pipe mill ... steel butt cut, hopper, steel straightening, steel forming, high-frequency welding, to outer burr, cooling, pipe sizing ...