Tapered drill rods are used for rock drilling, blasting, and other drilling operations in quarries, coal mines, road construction, and other building projects. They are used with tapered drill bits and are available in various lengths to meet different application needs. Our tapered drill rods offer a variety of taper angles; typically, light-duty rock drills use a taper angle of 7 degrees or less, while heavy-duty rock drills primarily use a taper angle of 11 or 12 degrees. The basic principle is that the taper angle of the drill rod and the drill bit should be consistent. We offer tapered drill rods with various shank configurations and hexagonal steel diameters suitable for handheld pneumatic drills.

(1) Steel grade: 95CrMo, equivalent to SANDBAR 20 or C253, Z708, SANDBAR 23, 55SiMnMo

(2) Shank dimensions: Hexagonal 22 mm × 108 mm, hexagonal 22 mm × 159 mm, hexagonal; 22 mm × 80 mm, hexagonal; 25 mm × 108 mm, hexagonal; 25 mm × 159 mm

(3) Taper: 7°, 11°, 12°, etc.

(4) Length: 0.4 m – 10 m