... of Drill RodNameQualityLengthGOrdinary Grade0.5 m, 0.8 m, 1 m to 6 m.G1High Quality Grade0.5 m, ... G11Export High Quality Grade0.5 m, 0.8 m, 1 m to 6 m.G111The Best Quality Export Grade0. ... 2. high quality 3. factory supply directlyThe drill pipe specification:1, Drill Bore Diameter: 40 mm2, Size: B22 (mm)3 ... to cooperate with you in the future. 0.5 meter, 1 meter, 2 meters, 3 meters B22 Mining Drill Rod