Product Name: Tapered Drill Rods
|Effective Length:||400mm-5800mm (L)|
|Shank:||H22 × 108mm, H19 × 108mm|
|Taper:||4.8°, 6°, 7°, 11°, 12°|
|Material:||High quality steels|
Tapered Drill Rods
The Tapered Drill Rods are widely applicable to mining industry, tunneling and underground engineering, open pit, construction drill, blast industry, civil engineering operations, road, gas line, pipe and trench projects, quarry work, rock anchoring and ground stabilization projects, water well industry, etc,.
The tapered drill rods which are matched with taper chisel bits, taper cross bits and taper button bits, are mainly used for rock drilling, blasting holes and other drilling works in the quarries, coal mines, traffic and other constructions.
A wide taper degree is normally used when drilling with high impact hydraulic rock drills in medium hard to hard and abrasive rock formations.
Generally, the light-duty rock drill uses 7 taper or smaller taper degree, the heavy-duty rock drill mainly uses 12 taper degree.
The tapered drill rods have a tough life, transferring the percussion energy from rock drill to drilling bit and then into the rock. They are also subjected to high bending stress, not to mention corrosive water in the flushing hole.
It is forbidden to keep working when the tapered drill rod is bended, otherwise the service life of the tapered drill rod would be decreased.
If the tapered drill rod was sheared, it can be restored by re-machining a new taper.
Address: Jinqing, Luqiao, Taizhou City, Zhejiang Province, China