IPC Subgroup
B21B 21/02 Rollers therefor
Introduced: September 1968
Last revised: January 2006
Full Title
Pilgrim-step tube-rolling > Rollers therefor
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- ROLLING OF METAL