... ,low alloy steel,aluminum plate. 2.Max. thickness is 18mm. NB Semiautomatic MIG/MAG/CO2 welding machine: This welding equipment machine ... , low alloy steel, stainless steel, aluminum, copper and other metals.NB-630 Technical Data:Input Voltage Three phase 380VDuty Cycle 60 ... IP21SWeight (KG) 250Size(L×W×H)mm 960×580×900 NB-630 CO2 Gas-shield Welding Machine