... cost low maintenance long life The featuer of portable spot welding gun 1, It is small and convenient for ... 4, Especially suitable for 1-15mm spot welding.5, Riveting,spot welding,pattern welding,dot welding,etc.6,Whole-set excellent elements ... spot welding for plastic part,screw implanting,rivet joint.8,widely used for welding automotive interior trim and household appliance portable spot welding ...