Equipped with inner vacuum structure. There is a pair of corrugated rollers to make a ply of paper sheet into one ply corrugated Characteristics:1.The diameter of corrugated roller is Φ260mm, Φ310mm, Φ320mm,Φ360mm, Φ430mm. It is made from alloy steel 48CrMo. The roller with heat treatment is polished, plated with chrome, the hardness of its surface reaches above SH75.The surface of the corrugated ...