... resistant to surface marks of the elastic roller 2.High efficient squeezing effect, significant effect PrincipleA steel tube rotates around ... hydraulic system.l The S-Roll roller is auxiliary driven by oil motor.l HMI (Whole machine monitoring, process parameter settings, ... 1800,2000,2200,2400,2600,2800,3000,3200,3400,36003Running speed 5-50m/min4Max line pressure between rollers 400N/mmFactory ...