Tank Construction Equipment, Engineering Vehicle, Tank Welding Machine manufacturer / supplier in China, offering Simple Tank Circular Seam Welding Tractor with Flexible Rails, Portable Tank Horizontal and Vertical Seam Welding Carriage (MIG Welder), Portable Tank Welding Tractor for Oil Tank Construction with Flexible or Straight Rails/Pressure Vessel Circular Seam Welding Machine/Automatic Welding Carriage and so on.