Pneumatic handheld rig ZQS-55 / 1.8S ZQS-50 / 1.8S pneumatic handheld rig works: Wind-acting piston driven by compressed air in the cylinder impact forward, so Gouge rock drill rod, the most widely used. Driven by electric motor via crank linkage impact hammer drill rod, hammering rocks. And using exhaust discharge chippings powder agencies, the use of internal combustion engine internal combustion principle, by blasting force petrol driven piston impact drill rod, hammering rocks. Apply without power, no gas source construction site. Hydraulic impact drill rod by means of hydraulic pressure inert gas and the impact body, hammering rocks. ZQS50 handheld pneumatic rock drill rigs impact of these agencies in return, by-turn rotation angle drill rod solder agencies forced to make changes in the position of the drill bit to continue hammering rocks. Suitable working pressure MPa 0.4-0.63 ZQS-15 / 1.2 pneumatic handheld rig ZQS-20 / 0.8 pneumatic handheld rig ZQS-20 / 1.0 pneumatic handheld rig ZQS22 / 1200 pneumatic handheld rig ZQS-25 / 1.8 pneumatic handheld rig ZQS-30 / 1.1 pneumatic handheld rig ZQS-30 / 1.2 pneumatic handheld rig ZQS-30 / 1.7S pneumatic handheld rig ZQS-35 / 1.1S pneumatic handheld rig ZQS-35 / 1.3S pneumatic handheld rig ZQS- 35 / 1.4S pneumatic handheld rig ZQS-35 / 1.5S pneumatic handheld rig ZQS-35 / 1.6S pneumatic handheld rig ZQS-35 / 1.7S pneumatic handheld rig ZQS-35 / 1.9S pneumatic handheld rig ZQS- 35 / 2.0S pneumatic handheld rig ZQS-40 / 1.8S pneumatic handheld rig ZQS-45 / 1.4 pneumatic handheld rig ZQS-45 / 1.4S pneumatic handheld rig ZQS-45 / 1.5 pneumatic handheld rig ZQS-45 / 1.6S pneumatic handheld rig ZQS-45 / 1.9S pneumatic handheld rig ZQS-45 / 2.3 pneumatic handheld rig ZQS-50 / 1.4S pneumatic handheld rig ZQS-50 / 1.5 pneumatic handheld rig ZQS-50 / 1.5S Pneumatic handheld rig ZQS-50 / 1.6 pneumatic handheld rig ZQS-50 / 1.6S pneumatic handheld rig ZQS50 / 1.7S pneumatic handheld rig ZQS-50 / 1.7S pneumatic handheld rig ZQS-50 / 1.8 pneumatic handheld rig ZQS-50 / 1.8S pneumatic handheld rig ZQS-50 / 1.9S pneumatic handheld rig ZQS50 / 2.0S pneumatic handheld rig ZQS-50 / 2.0S pneumatic handheld rig ZQS-50 / 2.1S pneumatic handheld rig ZQS- 50 / 2.3S pneumatic handheld rig JSD-HH Gast Jining Mining Equipment Co., Ltd.