IPC Main Group
B21B 21/00 Pilgrim-step tube-rolling
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- ROLLING OF METAL
Related Keywords
PILGERING
3 direct subcodes
Child Classifications
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- B21B 21/02 Rollers therefor
- B21B 21/04 Pilgrim-step feeding mechanisms
- B21B 21/06 Devices for revolving work between the steps