Rolling hollow basic material, (B21B19/04 takes precedence; separating work from mandrel B21C45/00)

Full Title

Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work (straightening by rollers B21D) > the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling > Rolling hollow basic material, (B21B19/04 takes precedence; separating work from mandrel B21C45/00)

Child Classifications

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• B21B 19/08 Enlarging tube diameter
• B21B 19/10 Finishing, e.g. smoothing, sizing