Square tube, round tube minimum bending angle

20 * 20MM square tube, wall thickness of 1.0MM, coreless pipe bending minimum bending radius R 72mm; through the core bending minimum bending radius R36mm; the above deformation rate does not exceed 8%;

20MM round tube, wall thickness of 0.8MM, coreless pipe bending minimum bending radius R76mm; through the core bending minimum bending radius R30mm; the deformation rate of the above Not more than 8%;

such as: when the material pipe diameter of 60mm, the thicker the pipe wall wall, both coreless bends or through the core bends, the bending radius R will be able to narrow to R1D!