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Add: No.3-1-1904, Zhujiangmoer International Building, Beiqinglu road, Changping distict, Beijing, PRC
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Friction Kelly bar

Friction Kelly bar

KELLY BAR   Kelly bars are key components in the execution of boreholes by hydrauli...
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Kelly bar

Kelly bar

KELLY BAR  
Kelly bars are key components in the execution of boreholes by hydraulic rotary drilling rigs. They transfer the torque of t...
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Kelly Bar

Kelly Bar

KELLY BAR  Kelly bars are key components in the execution of boreholes by hydraulic rotary drilling rigs. They transfer the torque of the rotar...
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Interlocking Kelly bar

Interlocking Kelly bar

  KELLY BAR   Kelly bars are key components in the execution of boreholes by ...
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Interlocking Kelly bar

Interlocking Kelly bar

KELLY BAR   Kelly bars are key components in the execution of boreholes by hydrau...
More>>
Friction Kelly bar

Friction Kelly bar

KELLY BAR   Kelly bars are key components in the execution of boreholes by hydrauli...
More>>
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