Automatic bellow forming machine 1). Range: dn100-dn1600mm 2). Power: 5.5kw 3). Control type: automatic 4). Form speed: 15min/each one Automatic bellow forming machine 1). Range: dn1000-dn3000mm 2). Power: 7.5kw 3). Control type: automatic Automatic bellow forming machine 1). Range: dn1000-dn3000mm 2). Control type: automatic