... , ore, tunnel. Detailed Product Description of Drill RodNameQualityLengthGOrdinary Grade0.5 m, 0.8 m, 1 m to 6 m.G1High Quality Grade0 ... to 6 m.G11Export High Quality Grade0.5 m, 0.8 m, 1 m to 6 m.G111The Best Quality Export ... Grade0.5 m, 0.8 m, 1 m to 6 m.integral drill rod, drill ... , Size: B22 (mm)3, Drill pipe length: 0.5 m, 0.8 m, 1 m to 6 m.We can supply integral ...