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PCE
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CPC Subgroup
B22D 11/117

by treating with gases (B22D11/118, B22D11/119 take precedence)

Full Title

Continuous casting of metals, i.e. casting in indefinite lengths (metal drawing, metal extruding B21C) > Supplying or treating molten metal (B22D41/00 takes precedence) > Treating the molten metal > Refining the metal > by treating with gases (B22D11/118, B22D11/119 take precedence)