Be used for stake of reinforced (rfd) screw thread PVC sleeve cast in situ concrete of embankment
The utility model discloses a be used for stake of reinforced (rfd) screw thread PVC sleeve cast in situ concrete of embankment, including pile body, pile cover, waterproof layer, PVC sleeve, water proof coating and prefabricated pile head, pile cover and pile body are reinforced concrete cast -in -...
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Format: | Patent |
Sprache: | chi ; eng |
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