Core Drilling Rig It can do standard penetration test Saving money, compact construction, easy moving Core Drilling Rig 1,Drilling depth can reach 30-200m2,Steel’s quality is good, torque is large3,Easy operation, free-maintaining,4,Applying to various complex strutam, such as pebble bed, aggregate bed.5, Saving money, compact construction, easy moving6, It adopts to geological exploration, ...