... .2mm 2.Max. Tube Length:3100mm Oval tube forming machine ( tube former )1 .produced by full-automatic ... occurred.When media flows in rectangular duct, resistance is high ;is easily occurred.2 Wet ... tube forming machine, flexible duct forming machine, auto roof forming machine, riveting machine, Pittsburgh seam lock machine. Hydraulic section steel bending machine, metal sheet flange forming machine, ...