Vertical ring rolling can work OD from 15 to 1200mm High effection Vertical ring rolling machineMODEL: D51 Y, D51 QSIZE: 160D, 160E, 250D, 250E, 350D, 350E, 400D, 400E, 500E, 630E, 800EChiefly for the bearing,automotive and chemical engineering piping manufacturing, and mainly rolling:bearing collars,gear blanks and piping flanges and other parts of circular shapes Material can be steel, ...