发明公开
EP2008731A4 MANDREL BAR FOR ROLLING OF HIGH ALLOY, METHOD FOR SURFACE TREATMENT OF THE MANDREL BAR, METHOD FOR MANUFACTURE OF THE MANDREL BAR, AND METHOD FOR OPERATION OF SEAMLESS STEEL PIPE PRODUCTION APPARATUS
有权
DORN ROD用于轧制高合金材料,METHOD FOR DORN ROD,制造方法柱状杆AND METHOD FOR操作该设备用于生产无缝钢管表面处理
- 专利标题: MANDREL BAR FOR ROLLING OF HIGH ALLOY, METHOD FOR SURFACE TREATMENT OF THE MANDREL BAR, METHOD FOR MANUFACTURE OF THE MANDREL BAR, AND METHOD FOR OPERATION OF SEAMLESS STEEL PIPE PRODUCTION APPARATUS
- 专利标题(中): DORN ROD用于轧制高合金材料,METHOD FOR DORN ROD,制造方法柱状杆AND METHOD FOR操作该设备用于生产无缝钢管表面处理
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申请号: EP07740114申请日: 2007-03-28
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公开(公告)号: EP2008731A4公开(公告)日: 2012-10-03
- 发明人: IIDA SUMIO , HIDAKA YASUYOSHI , YOSHIZAWA MITSURU , NAKAIKE KOJI
- 申请人: SUMITOMO METAL IND
- 专利权人: SUMITOMO METAL IND
- 当前专利权人: SUMITOMO METAL IND
- 优先权: JP2006088513 2006-03-28
- 主分类号: B21B17/02
- IPC分类号: B21B17/02 ; B21B17/04 ; B21B25/00 ; C23C8/10
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