of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes

Introduced: September 1968

Full Title

Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape > of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes

Of 7 combined children, 6 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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B21C 37/065 CPC only CPC only
B21C 37/08 Making tubes with welded or soldered seams +6 CPC IPC+CPC Available in IPC and CPC
B21C 37/10 Making tubes with riveted seams +6 CPC IPC+CPC Available in IPC and CPC
B21C 37/12 Making tubes or metal hoses with helically arranged seams +7 CPC IPC+CPC Available in IPC and CPC
B21C 37/14 Making tubes from doubled flat material IPC+CPC Available in IPC and CPC
B21C 37/15 Making tubes of special shape; Making fittings +5 CPC IPC+CPC Available in IPC and CPC
B21C 37/30 Finishing tubes, e.g. sizing, burnishing IPC+CPC Available in IPC and CPC