TREA

MAKING METAL CHAINS

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Industry

  • CPC
  • B21L

Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking

Current Industry

B21LMAKING METAL CHAINS

Sub Industries

B21L1/00Making chains or chain links by bending work-pieces of rod, wire, or strip to form links of oval or other simple shape B21L11/00Making chains or chain links of special shape B21L13/00Making terminal or intermediate chain links of special shape making couplings for chains B21L15/00Finishing or dressing chains or chain links B21L19/00Appurtenances for chain-making not restricted to any particular process B21L21/00Tools or implements for repairing chains using metal-working operations. B21L3/00Making chains or chain links by bending the chain links or link parts and subsequently welding or soldering the abutting ends B21L5/00Making chains or chain links by working the starting material in such a way that integral B21L7/00Making chains or chain links by cutting single loops or loop-parts from coils, assembling the cut parts and subsequently subjecting same to twisting with or without welding B21L9/00Making chains or chain links, the links being composed of two or more different parts B21L99/00Subject matter not provided for in other groups of this subclass
Industries