Discover the HG140 Automatic Iron Square Rectangular Tube or Pipe Welding Machine, a high-frequency welded pipe production line designed for efficiency and precision. Capable of producing pipes from 60~140mm in diameter and 1.5~5.0mm in wall thickness, this machine is perfect for low carbon steel and low alloy constructional steel. With a forming speed of 40-60m/min, it ensures high productivity and superior quality.