A brief history of the development of hydraulic rock drilling machinery and equipment
2022-09-28
Now, the full hydraulic rock drilling rig has been widely used in infrastructure construction, highway, railway tunnel excavation and slope support, large and medium-sized open-air and underground mines, quarry, hydropower and water conservancy projects, national defense engineering construction and many other projects in the rock excavation, mineral resources mining, anchor bolt anchoring, and stone mining and other fields.
Overall carburizing finished brazing production process
2022-09-21
Overall carburizing finished brazing process: hollow steel incoming inspection-material screening-straightening-water needle hole processing-impact end processing
1. Tail shank Hex22 x 108mm, R25 thread, L:600mm
2022-09-21
2. Finished brazing rod Hex22 x 108mm, taper: 7 °, L: 600mm 3. Finished brazing rod Hex25 x 159mm, taper: 7 °, L: 350mm 4. Drill drill Hex22 x 108mm, D:20mm, L: 400mm
Drill bit diameter: 89mm,102mm,115mm,127mm,152mm
2022-09-15
Lianhuashan drilling tools, striving to pursue the high quality of drilling tools
Hot spot of the week! What are the major global mining events this week?
2022-09-08
The National Energy Administration website, August 29, the National Energy Administration organized a shale oil exploration and development work conference and pointed out that increasing the scale of shale oil production in all directions and promoting the shale revolution is of great significance to the domestic and national energy security. In view of the next step of work, the meeting put forward five requirements: first, to emancipate the mind and increase investment in shale oil exploration and development; second, to strengthen faith and do a good job in improving shale oil recovery rate; third, to drive innovation and give full play to the leading role of scientific and technological innovation; fourth, to adhere to ecological priority and comprehensively promote the green and low-carbon development of shale oil; fifth, to strengthen policy support
T51-3660 thread drill pipe open-pit drill pipe
2022-09-08
T51-3660 thread drill pipe open-pit drill pipe
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