... 3,light steel keel machine series. Ceiling T Bar Roll Forming Machine Roll Forming Machine Ceiling ... 530mm, out diameter φ1200mm.4) Racka. One piece construction, the roll forming device, straightening device, ... 40Cr, finished after heat treatment and refine grinded.9) Hydraulic Cut Off device: (as drawing) ... pipes, use electric water pump, the cold medium is emulsified oil.13) Electric systema. Use ...