Тип вала насоса
1. Submersible Sump Pumps These are designed to sit directly in the water (and mud) in the sump basin. They are capable of handling debris and solids, making them well-suited for muddy water evacuation.
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.