DIFF Subgroup
B21B 19/02 the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling
Introduced: September 1968
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
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
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B21B 19/04 Rolling basic material of solid, i.e. non-hollow, structure; Piercing IPC+CPC Available in IPC and CPC
- B21B 19/06 Rolling hollow basic material, (B21B19/04 takes precedence; separating work from mandrel B21C45/00) IPC+CPC Available in IPC and CPC