C/U/ Channel & T Bar Roll Forming Machine. Those machines are also for making building material.
C/U/ Channel is the machine for making C track U channel for making ceiling, drywall and others.
T Bar Roll Forming Machine is for making main T gird, cross T gird which are only for ceiling.
This machine can be sorted two type according to the function. One is for drywall Roll Forming Machine, another is ceiling roll forming machine.