Range of diameter:200~1,250/ 100~1,250/ 100~1,600mm Thickness of material:0.5~1.2 mm Width of plate:125mm Spiral Duct Machine Spiral Forming MachineWhen process spiral tube, each diameter needs corresponding mould.It's easy to change mould and adjust. The spiral tubes feature stably in size, good seal and profect forming effect. The machine can apply automatic cutting device or roll cutting ...