发明名称 |
ETHOD OF MANUFACTURING HELICALLY-ROLLED LAMINATED TUBES AND TUBES MANUFACTURED IN ACCORDANCE WITH THE METHOD |
摘要 |
A typical embodiment of the invention produces helically wound tubes from strips of thin plate in which adjacent edges are provided with interlocking ribs that are folded over to form a compressed bead. A further rib is formed at the bead, the bead providing one of the sides of the new-formed rib. |
申请公布号 |
GB2027369(A) |
申请公布日期 |
1980.02.20 |
申请号 |
GB19790023229 |
申请日期 |
1979.07.04 |
申请人 |
WESTAFLEXWERK L & F WESTERBARKEY GMBH & CO |
发明人 |
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分类号 |
B21C37/12;F16L11/16;(IPC1-7):21C37/12 |
主分类号 |
B21C37/12 |
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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