XDL-RC series is mainly applied in RC drill,geothermal hole,anchor hole of deep base-ment foundation anchoring and reinforcement groundwork hole. Also, it is used in drilling in the drain hole and large tonnage prestressed anchoring hole of the geotech-nical engineering such as the side slope ofdam construction,railways,highways etc., and the anchoring hole of landslide preventing, pipe roof drill work,grouting reinforce-ment hole,mini foundation pile hole,water well and observation well.