60 anti-loose device is a set of safety protection device for normal and e···
73 Anti-loose device is a set of safety protection device for normal and e···
89 Triple shunt is a device for conveying the high pressure grout, compres···
The rotary jet drill is installed in the bottom of the drill pipe, the top···
50 single weight drill bit is installed in the bottom of the drill pipe, t···
60 double bit is installed at the bottom of the drill pipe, the top of the···
73 double bit is installed at the bottom of the drill pipe, the top of the···
89 triple drill bit is installed at the bottom of the drill pipe, the top ···
Rotary jet drill series anti-looser is installed in the splitter spindle a···
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