Main axis:Dia.45-55mm motor power:11kw, effective feeding width:250-350mm, production speed:5-8m/min. mounting dimension:2 Glavanized steel octagonal tubes used on roller shutter windows and doors and tubular motor.Material: Galvanized steelItem no.: OD40mm, thickness: 0.5-0.7mmItem no.: OD60mm, thickness: 0.7-0.8mmItem no.: OD70mm,thickness:0.8-1.2mmItem no.: OD80mm, thickness:1.2mm