1, API Spec 11AX Standard 2, Stationary barrel bottem anchor rod pump 3, Can be customized Specification of API 11AX subsurface sucker rod pumpSubsurface pump The subsurface pump also called sucker rod pump, is applied in Petroleum industry to extract oil out of the ground, it is assembled and connected to the lower end of the sucker rod under the ground, move up and down in the well as a unit, ...