发明名称 |
Verfahren zum Installieren eines neuen Rohres innerhalb eines bestehenden Rohres |
摘要 |
<p>A thermoplastic pipe in a flattened and folded shape and of selected characteristics is formed by manufacturing it in this reduced shape. It is inserted in the flattened and folded shape and in a pliable state into a pipeline to be lined. It is then expanded and when set serves as a rigid or semi-rigid pipe within a pipeline capable of withstanding external hydrostatic and earth pressures. The thermoplastic pipe is heated during its installation for installing it into an existing pipeline and for expanding it.</p> |
申请公布号 |
DE3727786(C2) |
申请公布日期 |
2001.08.23 |
申请号 |
DE19873727786 |
申请日期 |
1987.08.20 |
申请人 |
NU-PIPE, INC. |
发明人 |
STEKETEE JUN., CAMPBELL HALL |
分类号 |
B29C63/34;B29C53/08;B29C53/10;B29L23/00;E02B9/06;E02F5/10;E03F3/06;F16L1/00;F16L1/038;F16L55/165;(IPC1-7):F16L55/162;F16L47/00 |
主分类号 |
B29C63/34 |
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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