Shape or construction of rolls (for rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects B21H8/02 )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Shape or construction of rolls

CPC: Shape or construction of rolls (for rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects B21H8/02 )

Full Title

Full titles differ between systems:

IPC:

Rolls; Lubricating, cooling or heating rolls while in use > Shape or construction of rolls

CPC:

Rolls, (shape of working surfaces required by special processes B21B1/00); Lubricating, cooling or heating rolls while in use > Shape or construction of rolls (for rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects B21H8/02 )

CPC subdivides this area 5x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

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B21B 27/021 +1 CPC CPC only CPC only
B21B 27/024 +1 CPC CPC only CPC only
B21B 27/027 CPC only CPC only
B21B 27/028 CPC only CPC only
B21B 27/03 Sleeved rolls since 1990 +2 CPC IPC+CPC Available in IPC and CPC