发明名称 |
METHOD FOR PRODUCING SEAMLESS STEEL TUBES WITH A GREAT DIAMETER |
摘要 |
<p>A method of forming seamless metal tubing and pipes of large diameter in excess of 500 mm diameter. A thickwalled hollow body is made by continuous casting. Rolling the continuously cast hollow body over a mandrel in an oblique rolling mill to the desired weight per unit length. Radially expanding the rolled hollow body while maintaining its weight per unit length.</p> |
申请公布号 |
EP0178477(B1) |
申请公布日期 |
1990.01.03 |
申请号 |
EP19850111773 |
申请日期 |
1985.09.18 |
申请人 |
PETERSEN, ULRICH DR.-ING. E.H. DIPL.-ING |
发明人 |
PETERSEN, ULRICH DR.-ING. E.H. DIPL.-ING |
分类号 |
B21C37/06;B21B19/06;B21B19/08;B21B23/00 |
主分类号 |
B21C37/06 |
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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