发明名称 |
Method for the continuous production of a composite pipe comprising a pipe collar, composite pipe, and device for carrying out said method and producing said composite pipe |
摘要 |
<p>The method involves extruding external tube (37) and internal tube (39). The internal tube and troughs (40) of external tube are welded together and external tube is expanded to form expanded area for pipe socket (41). A transition portion (61) is formed between pipe socket and adjacent trough and area between internal and external tubes is vented into adjacent elevation (38) in the vicinity of transition portion. Independent claims are also included for the following: (1) twin-wall pipe; and (2) apparatus for manufacture of twin-wall pipe.</p> |
申请公布号 |
AU2005259613(A1) |
申请公布日期 |
2006.01.12 |
申请号 |
AU20050259613 |
申请日期 |
2005.06.10 |
申请人 |
RALPH-PETER HEGLER |
发明人 |
RALPH-PETER HEGLER |
分类号 |
B29C49/00;B29C35/16;B29C47/12;B29C47/92;B29C49/78;F16L11/15;F16L11/20 |
主分类号 |
B29C49/00 |
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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