The mandrels for bending pipes are an integral part of a pipe bending complex for the production of branches of oil and gas pipelines with a diameter of 152–1524 mm. by cold bending of pipes. In addition, mandrels can significantly reduce corrugation up to its absence and ensure that the ovality of pipes is maintained within acceptable limits.
The mandrel is placed in the pipe directly at the point where the bending process takes place. In the bending process, due to its design, the mandrel is constantly pressed against the pipe, which leads to a redistribution of the forces arising during bending, and can significantly reduce the corrugation and residual ovality of the resulting bend. All working bodies of the pipe bender are controlled from the control panel of the pipe bender.