rodamento de rolamento de rolamento de rolamento de trabalho
Content introduction
Problem: pump does not water, pressure gauge and true empty meter pointer beat violently.
Problem: pump does not water, pressure gauge and true empty meter pointer beat violently.
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.