DIFF Main Group
B21B 19/00 Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work (straightening by rollers B21D)
Introduced: September 1968
Title
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
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)
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
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)
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
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 IPC+CPC Available in IPC and CPC
- B21B 19/12 the axes of the rollers being arranged essentially parallel to the axis of the work IPC+CPC Available in IPC and CPC