

Cold roll forming process workflows
The title asks for a straightener mill plus CTL
If the board could be swapped for a round lockform tube, the distinction is unclear.
The weld zone and sizing stands define this line; round and square profiles run on the same mill
Show the laser head and the recipe tube—HF spark clip belongs on the ERW page.
Show the lock seam and cassette change—weld sparks belong on the ERW/laser pages.
Tube spiral/helical bending with mold change — distinct from a roll-form mill and the same-order leveler.
Square board and lock seam are the heroes—then bend/neck for fittings.
Show punch pattern and bottom weld location—a generic ERW flower clip is incomplete.