The present invention is one kind of automatic servo mechanism for winding and unwinding flexible pipe, and belongs to the field of machine making technology.

本发明为一种柔性管线收放自动伺服机构，属于机械制造领域。

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Polyethylene wall pipe with winding structure used in pipe jacking technology without slot is a specific material which can be applied to pipe jacking without slot on the ground.

不开槽顶管埋设技术聚乙烯缠绕结构壁管材专用料是一种可适用于地面不开槽，进行顶管施工的管材原料的专用料。

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