Packing is right to combined type beam -pumping unit polished rod

The utility model relates to a packing is right to combined type beam -pumping unit polished rod, this packing is right to combined type beam -pumping unit polished rod includes: nylon direction packing, conical wear -resisting packing, set upright or straight the hole, press cap, polished rod, incl...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG LIN, MA YACHAO, QIU CHENGSONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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