This C/Z Quick Interchangeable Roll Forming Machine adopts a special structure. The rollers for C&Z are changed very quickly without dismantle any parts . One machine can produce all specifications of C/Z/U purlins . Crimples are optional to increase rigidity of purlins. The width of the purlins can be automatically adjusted by PLC. If you need more economy then can be handle wheel adjusting as well. This machine we adopt Post-cutting and punching system, only need one cutting to make more size, the cutting blades can move up and down, left and right to save time to change blades.