... 4.Speed: 30-100M/min 5.CE High Frequency Aluminium Pipe making machineDevice principle: high-frequency welding steel pipe mill is to a ... machines, steel butt cut, hopper, steel straightening, steel forming, high-frequency welding, to outer burr, cooling, pipe sizing, pipe straightening, ... 3.3 Seam Guide 3.4 High Frequency Induction Welding Machine 3.5 Roller System for Moving 3.6 Burr Removing Frame( ...