This kind of machine has low cost,high benefit .It can weld all kinds of wire mesh sheets And it has good weld effect to the low carbon steei,stainess steel and all kinds of Coloured metal. tread Spot welding machine: 1. It processed by treading,the frame is simpie and it convenient when use. 2.It can be adjusted by electricity and can do high quality welding to the low carbon steel, stainless steel and coiored metal .