CPC Subgroup
B23P 6/045 Full Title
Restoring or reconditioning objects (straightening or restoring form of sheet metal, metal rods, metal tubes, metal profiles, or specific articles made therefrom B21D1/00, B21D3/00; repairing defective or damaged objects by casting techniques B22D19/10) > Repairing fractures or cracked metal parts or products, e.g. castings