GH114 unit GH165 unit GH219unit Diameter of Wleded TubesΦ60 Φ165mm Φ76 Φ195mmΦ114 Φ254mm Wall Thickness of Welded Tube 2 5mm 2 6mm 3 8mm Speed of Tube Welding15 50M/min15 50M/min 15 40M/min Power of major motor 250KW160KW*2 200KW*3 High Frequency Power 400KW 600KW 800KW