double production roll forming machine

The reasons why some profiles are not suitable for the 2 in 1 double production roll forming machine
The drywall channel partition joist roll forming machine, As the machine C stud and U track channel roll forming machine are popular in 2016 year. For example, the 50 C channel and 50 U channel, the 75 C channel and the 75 U channel, the 100 C channel and 100 U channel profile machines. They can be designed as one separate machine, and double production 2 in 1 machines. The double production 2 in 1 machines are very popular in 2016.

For the ceiling channel roll forming machine too, the double production 2 in 1 machines are popular too. For example, the 60x27 ,27x28 profile machine. It can be deigned as the separate machines, and can be designed as one machine with one shaft with 2 sets of molds and the double production machine lines.
Below are some pictures of the double production lines: