CPC Subgroup
B21B 27/06 Lubricating, cooling or heating rolls
Full Title
Rolls, (shape of working surfaces required by special processes B21B1/00); Lubricating, cooling or heating rolls while in use > Lubricating, cooling or heating rolls
2 direct subcodes
Child Classifications
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- B21B 27/08 internally
- B21B 27/10 externally