... equipped with obverse and reverse circulation pumping set. The brake valve of sewage is pneumatic control. It adopts the ... 8BS sewage pump.9. The rig can use steel wire pressure device which can help to drill in the ... larger torque of the turntable, it is mainly used for water well, building, bridge foundation, oil field casing ... 2480*10789 150m drilling depth geothermal well drilling machine for sales