<br />GS-20, GS-18 engineering and water well drilling rig supports a large giant framework and system hydraulically and that can frame control lift and travel, the hoisters double, large turntable surface plus unit and the face and the back set to pump blood circulation, and this type of drilling apply on business in the manipulation of complex geological conditions. GS-20, p 18 - engineering and water well drilling rig is a machine necessary for the construction of highways, railways, bridges and tall buildings, ports, dams and large-diameter piles drilled wells and deep wells.
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