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    SEAMLESS STEEL PIPE FOR LINE PIPE AND METHOD FOR PRODUCING SAME
    55.
    发明公开
    SEAMLESS STEEL PIPE FOR LINE PIPE AND METHOD FOR PRODUCING SAME 有权
    NAHTLOSES STAHLROHRFÜRLEITUNGSROHR UND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号：EP1918398A4

    公开(公告)日：2009-08-19

    申请号：EP06782902

    申请日：2006-08-22

    申请人： SUMITOMO METAL IND

    发明人： KOBAYASHI KENJI ,  OMURA TOMOHIKO ,  KONDO KUNIO ,  ARAI YUJI ,  HISAMUNE NOBUYUKI

    IPC分类号： C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/12 ,  C22C38/58

    CPC分类号： C22C38/005 ,  C21D8/105 ,  C21D9/08 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  Y10S148/909

    摘要： Disclosed is a seamless steel pipe for line pipes which has high strength and stable toughness while exhibiting good sulfide corrosion cracking resistance over a temperature range from low temperature to room temperature. The seamless steel pipe has a chemical composition consisting of, in mass%, 0.03-0.08% of C, 0.05-0.5% of Si, 1.0-3.0% of Mn, more than 0.4% and not more than 1.2% of Mo, 0.005-0.100% of Al, 0.001-0.005% of Ca and the balance of Fe and impurities including N, P, S, O and Cu. In the impurities, N is not more than 0.01%, P is not more than 0.05%, S is not more than 0.01%, O is not more than 0.01%, and Cu is not more than 0.1%. The seamless steel pipe has a microstructure composed of a bainite-martensite duplex structure.

    摘要翻译： 公开了一种用于管线管的无缝钢管，其具有高强度和稳定的韧性，同时在从低温到室温的温度范围内表现出良好的抗硫化物腐蚀开裂性。 该无缝钢管具有以质量％计含有C：0.03〜0.08％，Si：0.05〜0.5％，Mn：1.0〜3.0％，Mo：0.4％以上且1.2％以下，Mo：0.005 -0.100％的Al，0.001-0.005％的Ca和余量的Fe以及包括N，P，S，O和Cu的杂质。 在杂质中，N不大于0.01％，P不大于0.05％，S不大于0.01％，O不大于0.01％，Cu不大于0.1％。 无缝钢管具有由贝氏体 - 马氏体双相组织构成的显微组织。

    EXPANDABLE OIL WELL PIPE TO BE EXPANDED IN WELL AND PROCESS FOR PRODUCTION OF THE PIPE
    57.
    发明公开
    EXPANDABLE OIL WELL PIPE TO BE EXPANDED IN WELL AND PROCESS FOR PRODUCTION OF THE PIPE 有权
    可扩展的油井管延伸到孔多制造方法管

    公开(公告)号：EP2000555A1

    公开(公告)日：2008-12-10

    申请号：EP08722142.0

    申请日：2008-03-14

    申请人： Sumitomo Metal Industries Limited

    发明人： OHE, Taro ,  NAKAMURA, Keiichi ,  TAKABE, Hideki ,  ABE, Toshiharu ,  MORI, Tomoki ,  UEDA, Masakatsu

    IPC分类号： C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/50

    CPC分类号： C22C38/18 ,  C21D8/105 ,  C22C38/02 ,  C22C38/04 ,  C22C38/20 ,  Y10S148/909

    摘要： An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion has a composition containing, in percentage by mass, 0.05% to 0.08% C, at most 0.50% Si, 0.80% to 1.30% Mn, at most 0.030% P, at most 0.020% S, 0.08% to 0.50% Cr, at most 0.01% N, 0.005% to 0.06% Al, at most 0.05% Ti, at most 0.50% Cu, and at most 0.50% Ni, and the balance consisting of Fe and impurities, and a structure having a ferrite ratio of at least 80%. The oil country tubular good for expansion has a yield strength in the range from 276 MPa to 379 MPa and a uniform elongation of at least 16%. Therefore, the oil country tubular good according to the invention has a high pipe expansion characteristic.

    摘要翻译： 扩展gemäß发明的油井管在井中已展开。 对于膨胀油井管具有如下组成成分：以质量，0.05％至0.08％至C，至多0.50％的Si，0.80％至1.30％的Mn，0.030％的P，至多0.020％的S，12:08百分比 ％〜12：50％的Cr，至多0.01％至N，0.005％至0.06％于Al，至多0.05％的Ti，至多0.50％的Cu，和至多0.50％的Ni，和余量为Fe和杂质，以及结构 具有至少80％的铁素体比例。 为扩径用油井管具有良好的从276 MPa至379兆帕，至少16％的均匀延伸率的范围内的屈服强度。 因此，根据本发明的油井管具有高的扩径性。