Welded Tube Mill is called Cold Roll Forming Machine for welded pipe. Checking from the name, we can know that it is a kind of pipe making production line. For this machine, it supports the material thickness from 0.5-5mm, for diameter range from 10-127mm. And now there are four types welded pipe machines: HG32, HG50, HG76 and HG127. For different material thickness, diameter range, choose different pipe machine.