Hexagonal drill pipe dia 22mm taper degree 7 9 11 12 for taper bits Drill rod is also called drill pipe, it is made by high quality carbide and 55 SiMnMo steel. Tapered drill rods are used in granite and marble ... Read MoreGet Best Price
Drill rod for taper bits 7 degree 9 degree 11 12 taper rods for rock drill machine Drill rod is also called drill pipe, it is made by high quality carbide and 55 SiMnMo steel. Tapered drill rods are used in ... Read MoreGet Best Price