Semi rigid aluminum duct machine

Aluminum tube is widely used in the kitchen, bathroom, air condition venting and HVAC system. The corrugated aluminum tube can easily compressed and strached, and the aluminum corrugated tube can change its shape and keep it.
Features
1 Fixed molds fast changing
2 4 / 7 waves
3 45 degree cross joint
4 Enhanced rollers for Alu. and S.S
Semi rigid aluminum duct machine