We carried out a complete reformation for Threaded Products Workshop from Apr.5th to May 15th. In the new workshop, we installed double layers of thermal insulation, double glazed windows and new d...
For proper use of the button bits, guarantee the normal wear of scrapped the button bit, must pay attention to the following:
1 .according to the rock conditions (hardness, corrosion resistance) d...
Diamond core drilling is also exploration drilling method, which is the most conventional one, and has widely utilized in geological survey, mining exploration and bedrock stratum investigation and...
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 ...
In order to get out of the school, better social contact, understand social, training exercise their own talent, set up the service consciousness of the society, at the same time, better the textbo...
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...