Expanding mill

The full-automatic full-length steel pipe expanding machine designed and produced by Shuangyou technology is composed of expanding main machine, clamping car, front and rear flushing equipment. The expanding head mechanism converts the axial tension into the radial tension through the pull rod to expand the pipe, which can effectively improve the roundness and straightness of the steel pipe, reduce and homogenize the residual stress of the steel pipe, and is an indispensable important equipment for the production of oil and gas transmission pipeline.