... 300 to 1600 meters(984 to 5248ft) PRODUCT DESCRIPTIONXGY-300TH Core Drilling Rig is mainly used in geological engineering exploration range ... is now ranked premium manufacture and top oil field vehicle supplier group that is able to achieve independent R&D, machinery ... rig, No Guyline well service rig, water well drilling rig, core drilling rig, sand washing truck, flushby rig, dewaxing unit as ...