CPC Subgroup
B21B 13/18 for step-by-step or planetary rolling; (methods B21B1/42; making tubes by pilgrim-step rolling B21B21/00)
Full Title
Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories (B21B17/00 - B21B23/00 take precedence) > for step-by-step or planetary rolling; (methods B21B1/42; making tubes by pilgrim-step rolling B21B21/00)
1 direct subcode
Child Classifications
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- B21B 13/20 for planetary rolling