Extension rods are made by hollow drill steels; there are two shapes of extension rods, round type and hexagonal type. This hollow hole are usually named flushing hole, used for transmitting water ...
Here in the United States we used to refer to tunneling by drill-and-blast as “conventional” tunneling, which I guess leaves tunneling by TBM or other mechanized means to be referred to as “Unconve...
Pangolin Project was finished on Feb.28th, 2014. After almost 10 months of adjustment, this tapered rod production line is the best in China.
1.Continuous operation of 7 operators in forging proces...
newest top hammer tooling, the Drifter series of rods and bits. designed with a unique thread profile for added endurance and strength in the most demanding tunneling, bolting and drifting applica...
In the field of drilling and construction, having the right tools is crucial to getting the job done efficiently and effectively. For those tasked with drilling hard rock, Hard Rock Tapered Drilli...
With the advanced technology from both China and abroad, the production line of the picks is a continuous chain step furnace, composed of a welding furnace, a quenching furnace and a tempering furn...