CPC Subgroup
C21D 9/48 deep-drawing sheets
Full Title
Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor > for sheet metals > deep-drawing sheets
C21D 9/48 Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor > for sheet metals > deep-drawing sheets