dientes de bala de carburante
2. The pump selection is too small, the pump can not reach the user's required working conditions or process pressure, affecting the user's entire production effect or the overflow of the feed pool: in addition, the pump runs under a small flow rate for a long time, and the shaft may be broken.
2, according to the aperture is not the same, the drill can be divided into light drilling rig, medium drilling rig, heavy drilling rig.
2, according to the aperture is not the same, the drill can be divided into light drilling rig, medium drilling rig, heavy drilling rig.