Detailed Product Description Roller shutter roll forming machine about Forming process De-coilerGuiderRoll formingpunching- ... Roll forming rack: 22 setsb,The diameter of the roller axis:φ55mm, roller surface:250mmMaterial: 40Cr, quenching treatment HB280c, Main power ... :15kw timing electromotord,Material of roller :GCr15, Quenching,Hardness:HRC58-62ºe,Assistant roller rack: 2sets 3 Adjust part: ...