HONGTECH GEC180 Welding Machine,spot welder HONGTECH GEC180 Spot Welding Machine adopted HUA curve silicon steel chip, 100% copper core transformerand world wide famous brand relay,like DELIXI, OMRON, PANASONIC.Instand maximum welding current is 5400A which raise the single side welding thickness to 0.8+1.2mm.The inner operation voltage regulated by microprocessor control automatically and the ...