Mueller Opladen: pipe cutting, pipe profiling, pipe profile cutting, pipe cutting machine, pipe profiling machine, pipe profile cutting machine, welding, column & boom, positioners, circumferential welding, longitudinal welding, roller beds, turntable, welding generator, submerged-arc welding, plasma welding, MIG-welding, MAG-welding, MIG-MAG-welding, TIG-welding