... .upgraded new machine New function hydraulic rotary DTH Drilling Rig KG930A-H131.hydraulic motor2.crawler walking3.upgraded new ... pitch angleBlow 135°,elevation5°, total 145°Sliding carriage swing angleLeft100°,right45°,total 145°Drill boom pitch angleBlow ... 50°,elevation25°, total 75°Drill boom pitch swing angleLeft45°, right90°, total 135°Sliding carriage suppling length1200mmpowerYC4D80 ...