BZC200CA is applicable for drilling into clay, sand, bed, rock ,basalt, strata and more Contact ... chassis, transfer case, main drive system, transmission, double hoist group, mud pump, turntable, derrick, steel wire rope feed mechanism are installed ... operation drilling;* Drill with rotary rotary mud positive cycle drilling as the main drilling way, equipped with BW850/2 type a mud pump, using mud as ...