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发明名称
MANDREL FOR EXTRUDING PIPE WITH FINS AND ITS EXTRUDING METHOD
摘要
申请公布号
JPH05154541(A)
申请公布日期
1993.06.22
申请号
JP19910325916
申请日期
1991.12.10
申请人
NIPPON STEEL CORP
发明人
TOKUNAMI YOSHIFUMI;TAKAMURA YOSHINOSUKE;TANABE ISAO
分类号
B21C23/10;B21C25/04
主分类号
B21C23/10
代理机构
代理人
主权项
地址
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