发明名称 |
Method for the production of a tubular girder or the like |
摘要 |
In a method for the production of a tubular girder or the like by the internal high-pressure method, a straight tubular body is expanded with the aid of a pressure medium. This tubular body is welded together from tube sections with different wall thicknesses in order to be able to vary the wall thickness in the finished tubular girder within relatively wide limits.
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申请公布号 |
DE4320656(A1) |
申请公布日期 |
1995.01.05 |
申请号 |
DE19934320656 |
申请日期 |
1993.06.22 |
申请人 |
WILHELM SCHAEFER MASCHINENBAU GMBH & CO, 57234 WILNSDORF, DE |
发明人 |
SCHAEFER, AUGUST WILHELM, 5962 DROLSHAGEN, DE |
分类号 |
B21D26/02;B21D26/057;(IPC1-7):B21D26/02 |
主分类号 |
B21D26/02 |
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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