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CPC Subgroup
B21C 37/16

Making tubes with varying diameter in longitudinal direction

Full Title

Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape > of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes > Making tubes of special shape; Making fittings > Making tubes with varying diameter in longitudinal direction

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