发明名称 |
A PLASTICS PIPE PROVIDED WITH A SOCKET AND METHOD OF FORMING SUCH A PLASTICS PIPE |
摘要 |
A plastics pipe (1) comprises an inner wall (6) and an outer wall (5), being integral with longitudinal partitions (4) between them and bounding longitudinally extending channels (3) and a circumferential, helically or non-helically extending groove (10, 11, 12). The groove has been formed by closing the channels by pressing channel wall parts onto each other. A retaining ring (15) may be snapped into an external groove (10). |
申请公布号 |
DE2966170(D1) |
申请公布日期 |
1983.10.20 |
申请号 |
DE19792966170 |
申请日期 |
1979.12.27 |
申请人 |
WAVIN B.V. |
发明人 |
MARISSEN, ROELOF HERMAN;BEUNE, JOHANNES HENDRIKUS |
分类号 |
B32B1/08;B29C57/00;B29C67/00;F16L9/12;F16L47/06;(IPC1-7):16L47/06;29C17/02 |
主分类号 |
B32B1/08 |
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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