| 发明名称 |
METODO PER IL TRATTAMENTO SUPERFICIALE DI TUBI PER RESISTENZA AD ALTE TEMPERATURE E TUBI COSI' TRATTATI. |
| 摘要 |
<p>Method for superficial treatment of high temperature resistance steel tubes and tubes so treated, preferably for blowing tubes in metal fusion, characterized in that the steel tube is subjected to a coating of its external surface by means of fused and oxidized aluminium.</p> |
| 申请公布号 |
IT1234618(B) |
申请公布日期 |
1992.05.25 |
| 申请号 |
IT19890083369 |
申请日期 |
1989.04.04 |
| 申请人 |
PIVETTA DOMENICO VARMO UDINE |
发明人 |
DOMENICO PIVETTA;GIANPIETRO ULIAN |
| 分类号 |
C21C5/46;C23C4/10;(IPC1-7):F27D/ |
主分类号 |
C21C5/46 |
| 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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