GH10 GH20 GH25 Diameter of Wleded Tubes Φ7 Φ16mm Φ8 Φ25mm Φ18 Φ32mm Wall Thickness of Welded Tube0.2 0.8mm0.3 1.2mm 0.4 1.5mm Speed of Tube Welding20 80M/min20 80M/min 20 80M/min Power of major motor 15KW 30 KW37 KW High Frequency Power 100KW100KW 100KW