Characteristics: ►Low cost for mobilization, easy site installation,reliable operation performance, and easy maintenance. ►Classic model for intermediate and shallow wells with reliable and stable capacity. ►12*8 reinforced chassis, fast transportation and good cross-country capacity. ►Hydraulic disk brake for draw works is optional. ► Air-controlled water-cooling disk auxiliary brake for draw works is optional. ►Emergency power system is optional. Technical Parameters: Type ZJ20/1580CZ Structure type Self-propelled Drilling depth(4 1/2″ DP) 6600ft Workover depth (3 1/2″ DP) 18000ft Max. hook load 350000lbs Engine's model CAT3412B DITA Engine power 650hp or 660hp Model for hydraulic transmission box CLBT6061 The transmission mode Hydraulic +mechanicl Traveling system 4×5 Model for hook block YG135/ YG160 Model for swivel SL135/ SL160 Model for rotary table ZP175 Overall dimension (ft) 67×9×15 Weight of the main unit 130000lbs