发明名称 |
Internally ribbed tube production process - welds seams working in opposite direction to flanges of strips forming walls |
摘要 |
<p>The tube is composed of a number of similar flat strips bent into an L- or U-shape, each forming a lengthwise rib and a strip of outside wall between this and the next rib. They are welded together so that the bend in one is joined to the edge of the next one. In welding the seams (6) the operations are carried in a sequence running in the opposite direction to that in which the strip portions (5') forming the outside wall extend. Each weld can be made at the same height and along the next seam in the same direction, working round the tube until all welds are complete.</p> |
申请公布号 |
DE2520800(A1) |
申请公布日期 |
1976.11.18 |
申请号 |
DE19752520800 |
申请日期 |
1975.05.09 |
申请人 |
FUCHS,GUENTER,PROF.DIPL.-ING. |
发明人 |
FUCHS,GUENTER,PROF.DIPL.-ING. |
分类号 |
B23K9/025;(IPC1-7):21C37/22;28F1/40 |
主分类号 |
B23K9/025 |
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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