(1) Seam Welder (2) Guides welding torch to run along welding seam correctly (3) Improve welding efficiency 40% Laser Seam-Tracking, assistant automatic welding machine, can use for tracking welding seam of Spiral Steel Pipe. Below is introduction.FunctionsWhen the welding seam is long, not straight, or spiral, our machine can control welding torch move along welding seam direction strictly, thus ...