drilling rig,Drilling Rig,30,40,50,70,90DBS,drill rig,factory price,09new style,tech from USADec 21, 2012
... preventing collide up and impact down (crown and RT protection) . with the online monitoring system for working s tatus of mechanical, electric ... control cabin is independent and lifted hydraulically (ZJ70DBS), without contacting the drill floor, with little vibration, and convenient for installation and teardown ... ,30,40,50,70,90DBS,drill rig,factory price,09new style,tech from USA