CPC Main Group
B21D 39/00 Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating ( riveting B21J; uniting components by forging or pressing to form integral members B21K25/00; welding B23K; press-fitting, force-fitting, or shrinking in general B23P11/00, B21D19/00; by adhesives F16B11/00 ); Tube expanders
5 direct subcodes
Child Classifications
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- B21D 39/02 of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D 39/03 of sheet metal otherwise than by folding
- B21D 39/04 of tubes with tubes; of tubes with rods
- B21D 39/06 of tubes in openings, e.g. rolling-in
- B21D 39/08 Tube expanders