Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work (straightening by rollers B21D)

Child Classifications

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• B21B 19/02 the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling
• B21B 19/12 the axes of the rollers being arranged essentially parallel to the axis of the work