buy rotary drill rig

RFQ Details

i am after a hydrolic excavator mounted drill rig capable to drill contiguos piles as well as foundation piles . it must be able to drive a continuos flight auger nine metres in length with a hollow stem for concrete and or grout to pass through the hollow centre ,so when withdrawing the auger grout will fill the base of the hole.Three different auger diametres will be required 450mm/600mm/900 mm all to have tungsten cutting teeth.and be driven by rotary drive xxxxx of the material we will be drilling is sand or clay .I would like the excavator machine size to be around 12ton because access into the worksite is sometimes minimal .measurments are a close gide of a machine i have seen working i would like to here of equipment that is like the description i have xxxxx you have any equipment that would suit this description or it may be close to this description i would appreciate you sendind all the relevant information you may have on on a rotary drill rigs of the same character.