Our Welding seam tracker(seam welder)detectsevery changes of welding position automatically, then control welding torch to move left/right up/down through our controller, finally make welding torch to run along welding position correctly, thus ensuring welding accuracy and improving welding speed. During your welding process, , have you ever met the problems thatwelding seam is not straight enough, andwelding torch does'trun alongwelding seam automatically,