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1) accurate pattern;, 2) peripheral drilling heating;, 3) central hollow inner pipe screw heating - details see: https://www.machineto.com/thermo-calender-hot-roller-10271330

Material of hot roller/thermo-calender roller

Best quality alloy steel as material,molding after mechanical maching and heat treatment.

Surface hardness HRC58~62

Way of heating:

central hollow inner pipe screw heating

peripheral drilling heating

Pattern:

To the user's requirements,we can make many patterns,such as square dot,circle dot,diamond,cross,striation and any regular and irregular patterns.

Our hot roller has been ever for west germany and taiwan hot rolling machine and we have ever made the largest asian hot roller (φ720x5400mm).

Laser cutting machine for thermo-calender roller promotes the rollers' quality.

More advantages:

a) accurate pattern

b) choosing patterns,depth,and angle according to your requirements