Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts (straightening of well casings in situ E21B; )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts

CPC: Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts (straightening of well casings in situ E21B; )

Full Title

Full titles differ between systems:

IPC:

Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts

CPC:

Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts (straightening of well casings in situ E21B; )

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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B21D 3/005 CPC only CPC only
B21D 3/02 by rollers IPC+CPC Available in IPC and CPC
B21D 3/10 between rams and anvils or abutments IPC+CPC Available in IPC and CPC
B21D 3/12 by stretching with or without twisting (by twisting only B21D11/14) IPC+CPC Available in IPC and CPC
B21D 3/14 Recontouring IPC+CPC Available in IPC and CPC
B21D 3/16 of specific articles made from metal rods, tubes, or profiles, e.g. crankshafts, by specially adapted methods or means IPC+CPC Available in IPC and CPC