... iron torii type, material:HT200c, Roll forming rack: 12 setsd, The diameter of the roller axis:φ70mm, roller surface:400mmMaterial: 40Cr quenching ... diatribution box.f, Main power: 30kw frequency conversion, ZQ500 reducerg, Material:GCr15, Quenching,Hardness:HRC58-62ºh, Assistant roller rack: 4 ...