Watch a square tube automatic straightening machine run a production batch of structural square sections. Each tube is loaded onto dedicated V-flat fixtures that support all four faces, while the straightening head applies controlled force at measured high points. This setup keeps corners crisp and prevents the local dimpling that appears when round rollers are used on square stock.
Automatic loading and unloading hold the cycle at 20–90 seconds per piece, roughly 5–10 times faster than manual press straightening. The machine accepts sections across the Ø5–600 mm capacity range, with stock lengths of 100 mm to 12 m, and long-bed frames carry 5–8 probes so deflection is mapped over the full tube before the ram moves.
Typical users include racking and shelving manufacturers, trailer builders, construction formwork suppliers and furniture factories — anyone cutting and welding square tube in volume where straight, twist-free sections speed up fixturing and reduce scrap. The footage includes a close-up of the changeover between two batch sizes, showing how quickly the guides and recipes reset for the next run, and every finished tube comes off unmarked on the flats, ready for robotic welding or mitre cutting without further preparation.
Compare configurations with the buyer’s guide to straightening machines, see the complete catalogue of Bar & Tube Straightening Machines, or request a quote with your square tube specifications.
Four-face fixturing protects corners and prevents dimpling
Automatic load and unload for 20–90 second production cycles
5–8 probes on long beds map full-length deflection
Up to 10x faster than manual press straightening
One operator supervises several fully automatic machines
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