发明名称 |
Steel product excellent in sulfide cracking resistance. |
摘要 |
A steel product, such as a steel pipe for line-pipe, excellent in sulfide cracking resistance sufficient to accept a CAPCIS test. The steel product is manufactured by rolling or forging to have a matrix not including B type inclusions having lengths of 200 mu m or more in the longitudinal direction. Furthermore, the steel pipe is manufactured by rolling or forging to have a matrix not including B type inclusions having dimensions of 200 mu m or more in the longitudinal direction within 4 mm of the inner surface. <IMAGE> |
申请公布号 |
EP0616042(A1) |
申请公布日期 |
1994.09.21 |
申请号 |
EP19940103911 |
申请日期 |
1994.03.14 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD. |
发明人 |
KUSHIDA, TAKAHIRO |
分类号 |
C22C38/00;C22C38/06;C22C38/60;F16L9/02 |
主分类号 |
C22C38/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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