... Flexible, Convenient No shock,noise or pollution Long Screw Drill Tools Main Technical ParameterModelZKL-18TypeZKL-20Type Hole diameter(mm) ... .The hydraulic chassis can realize the 360°full revolution,with quick and accurate emplacement,displacement,leveling and other actions ... front control room applies centralized control,with open sight.This series of drilling machine,with the features such as high ...