... corrugated paper, then, agglutinated with another paper sheet into one single Face cardboard. Different flutes needs different pairs of corrugating rollers ... corrugated Roller is Φ260mm,made of material 48CrMo alloy metal,heat treatment with high frequency,precise grinding, surface rigidity is ... pneumatic, easy to clean. From the panel of the Single facer, might control the two mill roll stands in the ...