HONGTECH GEC180 Welding Machine,spot welder HONGTECH GEC180 Spot Welding Machine adopted HUA curve silicon steel ... maximum welding current is 5400A which raise the single side welding thickness to 0.8+1.2mm. ... for different plates such asheat, meson, vertical pulling, spot welding, flatten, waveform line,stud, OT type washer ... length2300+1900 MM GEC180 Welding Machine/spot welder/welding machinery