How to re-roll big bellows ?Amazing rerolling machine DN360-5000mm / rolling forming machine

Bellow re-rolling machine is used to modify the bellow’s shape after convolution formed by the auto punch bellow forming machine. Its main purpose is to increase the convolution height and narrow the pitch.
There are many types of bellow rerolling machines designed for different size.
The machine in the video is suitable for DN380-5000mm. To raise the top support shaft, you can utilize it for size as big as you need. #expansionjoint
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