Three-step hydraulic precise forming die and method for rectangular corrugated pipe

The invention discloses a three-step hydraulic precise forming die and method for a rectangular corrugated pipe. The three-step hydraulic precise forming die is characterized in that a lower core shaft and a lower end cover are placed on the surface of the center of a lower guide plate, a rectangula...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LYU ZHIYONG, ZUO XINGYU, LIU QIANG, WANG WENHUA, LIU JING, LI LANYUN, GE QIAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
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