T38 thread drill pipe roadway excavation, anchoring operation, tunnel engineering
2022-05-25
T38 thread drill pipe roadway excavation, anchoring operation, tunnel engineering
This is how the drill rod is produced.
2022-05-25
Inspection of hollow steel-blanking according to the length of the drill rod-machining threads at both ends of the rod body (MF drill rod needs to forge female thread ends first)-machining handle groove-
How is the hollow steel used to make the drill rod produced?
2022-05-14
Production of hollow steel for drill rod: electric furnace smelting-LF furnace refining-bloom continuous casting machine casting billet
2022-04-29
There are more than 200 types of hydraulic rock drill products produced by enterprises such as Ambaituo, Sandvik, Montebet, Guhe in Japan and Duofu in Finland all over the world. Coupled with the continuous modification of the products, there should be more than 400-500 types of drill tails.
Pay attention to lotus mountain drilling tools:
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