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...
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...
The Top Hammer Drilling Bits market report provides a unique, first-time market and competitive analysis of the size, segmentation, competition, trends and outlook in the manufacture and supply of ...
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...
Bullet Teeth: The New Generation of Rotary Drilling Teeth
A new type of rotary drilling teeth is taking the drilling industry by storm. Known as bullet teeth, these innovative tools are designed to...
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 ...