... B,C,E 4. Heating type: oil, electricity HRB-280 single facer corrugated machine Purpose and Characteristics: 1 Design Speed: 80m ... width: 1400mm-2200mm3 Corrugated roller:φ280mm4 Fingerless vacuum suction type single facer, the upper and lower corrugated roller made of 48 ... as main drive , independent gear box connect with three gimbal axis, Inverter to make stepless speed regulation for save power, and ...