... gas but water -CE,UL.CCC+2 year warranty arc welding arc welding machineMultiplaz 3500 is a unique multifunctional portable plasma device ... cutting, welding, soldering and brazing. Welding type:Plasma and plasma arc. (working by water no need gas)For cutting all you ... mm), welding (up to 50mm), brazing, soldering.2, A portable multi-functional plasma device working at all kinds of metals, including ...