Metalų terminis apdorojimas
This class includes: - general activities for the heat treatment of metals - thermomechanical heat treatment of metals (e.g. preheating, annealing, hardening, tempering, quenching, deep freezing of metal) - thermochemical heat treatment of metals (e.g. carburising, carbonitriding, nitrocarburising, nitriding, oxidising, sulphidising, boriding)
See how 25.52 maps to other classification systems side by side — names, scope and differences.
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