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3 Roll Bending Machine (Working Principle and Rolling ...

b'3 Roll Bending Machine Working Principle. Roll bending machine has also been called rounder and roller machine, which is universal forming equipment for rolling metal plate into the cylinder, cone, curved and other shapes. According to the principle of the three-point forming circle, the relative position change and ...'

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Bending square and rectangular tubing - The Fabricator

b'May 16, 2002 \xc2\xb7 However, when shop-fabricated square or rectangular material is formed, the corner edges become work-hardened. This can cause bending difficulty or cracking at the corner. Hard Way Versus Easy Way. When rectangular tubing is bent, the material often has less distortion if it is bent the hard way ( 2 ).'

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