| 发明名称 |
Strengthening concrete reinforcing steel - by stretching during tempering |
| 摘要 |
<p>The steel is heat-treated at is approx. 600 degrees C cooled and then stretched at is approx. 300 degrees C. The method is simple and has less working stages than is prior art.</p> |
| 申请公布号 |
DE2233648(B1) |
申请公布日期 |
1974.01.03 |
| 申请号 |
DE19722233648 |
申请日期 |
1972.07.08 |
| 申请人 |
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发明人 |
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| 分类号 |
B21J5/00;C21D8/08;C21D9/52;(IPC1-7):21D7/10 |
主分类号 |
B21J5/00 |
| 代理机构 |
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代理人 |
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| 地址 |
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