... the vulnerability of non-insurance).Machinery main components:1.open book machine (uncoiler), 2.forming welding machine,3.grinding machine, 4.sizing machine, 5.frame straightening ... : open-book machine, forming welding machine, grinding machine, two sizing units, straightening frame, cutting machine, finished frameCertification:Comany ProfileThe MachineThe Welding Table Automatic Industrial ss pipe ...