High -pressure well drilling pump piston

The utility model provides a metal -cored not fragile, long service life's high -pressure well drilling pump piston, include metal pressure plate, buffer board, leather cup, protect root, metal -cored and cushion collar, wherein, metal -cored for falling " T " type structure, the cent...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DU HONGWEI, LI YANSHUN, ZHANG YIGUI, MIAO DONGYING, CHEN XU, DOU QINTAN, WANG XINJIN, MU XUEJIE, MA YU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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