CPC Subgroup
B29C 57/02 Belling or enlarging, e.g. combined with forming a groove
Full Title
Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor > Belling or enlarging, e.g. combined with forming a groove
3 direct subcodes
Child Classifications
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- B29C 57/04 using mechanical means
- B29C 57/08 using pressure difference