| 发明名称 |
Method for manufacturing electric-resistance-welded steel pipe with high strength. |
| 摘要 |
<p>A method for manufacturing an electric-resistance-welded steel pipe with high strength comprises : hot-rolling a slab having 0.05 to 0.30 wt.% C, 0.6 to 2.0 wt.% Mn, 0.03 to 0.70 wt.% Si with the balance being Fe and inevitable impurities into a hot-rolled steel sheet ; annealing continuously the hot-rolled steel sheet; and making the continuously annealed hot-rolled steel sheet into an electric-resistance-weld steel pipe. After the step of hot-rolling the slab into a hot-rolled steel sheet, the step of cold-rolling the hot-rolled steel sheet into a cold-rolled steel sheet can be added. <IMAGE></p> |
| 申请公布号 |
EP0494448(A1) |
申请公布日期 |
1992.07.15 |
| 申请号 |
EP19910122222 |
申请日期 |
1991.12.24 |
| 申请人 |
NKK CORPORATION |
发明人 |
MAEDA, TATSUO;TAKAMURA, TOSHIHIRO;ISHIZAWA, YOSHIICHI;SUGIMOTO, YUJI;MORIMOTO, MITOSHI;SUGAYOSHI, TETSURO;NISHIMURA, FUMIHIRO |
| 分类号 |
C21D8/02;C21D8/10;C22C38/04;F16L5/02 |
主分类号 |
C21D8/02 |
| 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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