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equipment (lifting rings, elevators, tongs, slips, standing root moving mechanisms, etc.) used for lifting and lowering operations. ( ) rotating system. in order to rotate the drilling tool to continuously break the rock, the water well drilling rig is equipped with a turntable or a power faucet, a drill string
transmission. ( ) control system. in order to make the various systems of the rig work in coordination, the rig is equipped with various control equipment such as mechanical control, gas control, electric control and hydraulic control, so as to centralize the gas console and observation and recording instruments...
https://www.jkdrilling.com/news/eight-systems-that-a-rig-must-have.html