Weather-resistant double-layer winding pipe with smooth inner wall
The utility model is suitable for the technical field of pipeline fittings. The utility model provides a weather-resistant double-layer winding pipe with a smooth inner wall. The device comprises a pipe body mechanism and a connecting mechanism, the pipe body mechanism comprises a pipe body, a reinf...
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Format: | Patent |
Sprache: | chi ; eng |
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Online-Zugang: | Volltext bestellen |
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