... of Petroleum drilling rig from 2000m-9000m Drilling rig 750HP-3000HP;off shore and on shore drilling rig and rig components.All type of Petroleum drilling rig from 2000m ... configurations and styles including digital control VF rig,mechanical rotary table rig ,electromechanical rig,DCrig,mechanical rig,trailer drilling rig.Drilling rig parts and tool:crown block,main ...