... rig derived products, in addition to maintain the technical performance of the GXY-2K rig, structural ... construction and engineering geology of road, rail, bridge foundation, dam, wells, prospecting and other survey work, ... compact, light weight, small size, good removableTechnical Specifications (Basic Specifications)Drilling capacity200mDiameter of drill rods42mmDrilling angle0-90°Dimension1856 ...