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PCE
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DIFF Subgroup
B21B 19/06

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

Introduced: September 1968

Title

Titles differ between systems:

IPC: Rolling hollow basic material

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

Full Title

Full titles differ between systems:

IPC:

Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work > the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling > Rolling hollow basic material

CPC:

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)

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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  • B21B 19/08 Enlarging tube diameter IPC+CPC Available in IPC and CPC
  • B21B 19/10 Finishing, e.g. smoothing, sizing IPC+CPC Available in IPC and CPC