... rate, to keep flute profiles stable under high speed.All the corrugated rolls, pressure roll, gluing roll are pneumatically ... stable.The shafts of corrugated and pressure roll are all heat resisting and lubricated by lubricating grease.The corrugated ... treatment of hardening and tempering, grinding, laser-quenching, spraying tungsten carbide, make the hardness up to HVC1200.Equipped with spay wetness ...