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