dual-acting rodless gas-actuated pump 双作用无杆气动泵
gas-activated rodless subsurface pump 气动井下无杆泵
rodless PC pump 无杆螺杆泵
rodless deep well pump 无杆深井泵
Imersion oil electric pump unit is a kind of oil jack with rodless deep extraction, large discharge capacity and high lift.
潜油电泵机组是一种无杆深抽、排量大、扬程高的抽油设备。
The utility model belongs to an electromechanical product, in particular to a rodless driving mechanism for a reciprocating oil well pump.
本实用新型属于机电产品，特别涉及一种往复式抽油泵无杆驱动机构。
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