... Rotary Drilling Rig 1. Max. Drilling Torque: 230 kN.m 2. Max. Drilling Diameter: 2m 3. Max. Drilling Depth: 60m-70m HDR230 Rotary Drilling Rig ... and short or long optional helical bore and have drilling rod auto- ... rotary-drum-type, double-horizontal-shaft), Concrete Batchers, Concrete Mixing/BatchingPlants (25-480m3/h, stationary, mobile, conventional-type, compact-type, simple-type, commercial-type ...