发明名称 |
METHOD FOR PRODUCING PIPES TO BE CONNECTED IN A DOUBLE-WALL PIPING SYSTEM AND IMPLEMENTING MACHINE |
摘要 |
<p>A process and machine to make double-walled pipe to be connected end to end, wherein each pipe includes inner and outer tubes arranged coaxially with a ring-shaped space between them except at a connecting area at the end of the pipe where the outer tube is longitudinally retracted with respect to the inner tube. An end-wall of the outer tube is deformed to close off the ring-shaped space by the gradual application of pressure to its wall by means of a series of bars spaced in a ring around a connecting area and tilted over in a radial direction by a crown that is fixed with respect to the outer tube and onto which the bars are attached in an articulated manner.</p> |
申请公布号 |
EP1053065(B1) |
申请公布日期 |
2003.07.09 |
申请号 |
EP19990958278 |
申请日期 |
1999.12.08 |
申请人 |
ITP |
发明人 |
MARCHAL, PHILIPPE;RIVIER, MATHIEU |
分类号 |
B21D39/04;B21D41/04;(IPC1-7):B21D39/04;F16L3/14 |
主分类号 |
B21D39/04 |
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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