drilling rig,DC drilling Rigs,drilling machinery Model:ZJ50D, ZJ70D Nominal drilling depth, m:5000, ... (t)31503154500450dill line system of travelling system6×76×7Dia. Of drill line,mm3538Max. pull of fastline, kN3503548548.5DrawworksModelJC-50DJC-70DRated power ... of main generator × capacity3×1500KVA4×1900KVA drilling rig,DC drilling Rigs,drilling machinery.... DC drilling ...