This machine line has passed ISO9001:2000 Quality Managing-system Certification. Basic components include: uncoiler, shear and end welder, horizontal accumulator, main machine(forming, welding, sizing unit), computer-controlled tracking cutting saw and runout table. Main Technical Parameters   ZG76 unit ZG89 unit Diameter of Welded Tubes φ25-80mm φ32-95mm Wall Thickness of Welded Tube 1.5-4.0mm 1.5-4.5mm Speed of Tube Welding 15-60M/min 15-50M/min Power of Major motor 160KW 110KW ×2 High Frequency Power 300KW 300KW